{"id":259,"date":"2023-06-23T03:45:55","date_gmt":"2023-06-23T03:45:55","guid":{"rendered":"https:\/\/physigeek.com\/it\/amp\/"},"modified":"2023-06-23T03:45:55","modified_gmt":"2023-06-23T03:45:55","slug":"amp","status":"publish","type":"post","link":"https:\/\/physigeek.com\/it\/amp\/","title":{"rendered":"Amp"},"content":{"rendered":"<p>Questo articolo spiega cosa sono gli amplificatori. Quindi scoprirai non solo cosa significa un ampere, ma anche a cosa serve un ampere e quali sono le differenze rispetto alle altre unit\u00e0 elettriche. Inoltre, potrai convertire tra multipli e sottomultipli dell&#8217;ampere con un calcolatore online.<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-un-amperio\"><\/span> Cos&#8217;\u00e8 un amplificatore?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> L&#8217; <strong>ampere<\/strong> , chiamato anche <strong>ampere<\/strong> , \u00e8 l&#8217;unit\u00e0 di corrente elettrica del Sistema Internazionale (SI). Vale a dire, l&#8217;ampere \u00e8 un&#8217;unit\u00e0 utilizzata per misurare la quantit\u00e0 di elettroni che circolano in un circuito elettrico.<\/p>\n<p> Il simbolo dell&#8217;ampere \u00e8 la lettera A maiuscola. Ad esempio, per esprimere un&#8217;intensit\u00e0 elettrica di sette ampere, indichiamo 7 A.<\/p>\n<p> In fisica l&#8217;ampere viene definito anche dal coulomb, poich\u00e9 un ampere equivale alla carica di un coulomb che attraversa una sezione in un secondo.<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-c96397e27241a00fbe7700408b6a6991_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" 1 \\ A = 1 \\ \\cfrac{C}{s}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"81\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p> Il nome ampere (o ampere) di questa unit\u00e0 elettrica fu creato nel 1881 in onore del fisico francese Andr\u00e9-Marie Amp\u00e8re, che contribu\u00ec in modo significativo alla creazione dei fondamenti teorici dell&#8217;elettromagnetismo.<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Amperios-voltios-ohmios-y-vatios\"><\/span> Ampere, volt, ohm e watt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> In questa sezione vedremo la differenza tra un amp, un volt, un ohm e un watt, poich\u00e9 si tratta di quattro unit\u00e0 elettriche ampiamente utilizzate e talvolta confuse.<\/p>\n<ul style=\"color:#4fd12f; font-weight: bold;\">\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Ampere (A)<\/strong> : unit\u00e0 utilizzata per misurare l&#8217;intensit\u00e0 di una corrente elettrica.<\/span><\/li>\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Volt (V)<\/strong> : unit\u00e0 utilizzata per misurare la differenza di tensione tra due punti in un circuito elettrico.<\/span><\/li>\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Ohm (\u03a9)<\/strong> : unit\u00e0 utilizzata per quantificare il valore della resistenza elettrica.<\/span><\/li>\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Watt (W)<\/strong> : unit\u00e0 utilizzata per esprimere i valori della potenza elettrica.<\/span><\/li>\n<\/ul>\n<p> Pertanto, ciascuna di queste unit\u00e0 ha uno scopo diverso, poich\u00e9 ciascuna viene utilizzata per misurare una caratteristica diversa di un circuito elettrico.<\/p>\n<p> Tutte queste unit\u00e0 elettriche sono collegate matematicamente. Pertanto, l&#8217;intensit\u00e0 della corrente elettrica tra due punti pu\u00f2 essere calcolata dalla differenza di tensione e dalla resistenza tra questi punti utilizzando <strong>la legge di Ohm<\/strong> :<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-5e6a5aa991879f9b765f5b14aab48aa8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" I=\\cfrac{\\Delta V}{R}\" title=\"Rendered by QuickLaTeX.com\" height=\"39\" width=\"65\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p> Quindi, un amplificatore pu\u00f2 anche essere definito come un volt diviso per un ohm.<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-53da5a860ad37d71bb1064e6cc852b52_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" 1 \\ A=\\cfrac{1 \\ V}{1 \\ \\Omega}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"83\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p> D&#8217;altra parte, la potenza di un circuito elettrico \u00e8 pari all&#8217;intensit\u00e0 della corrente elettrica moltiplicata per la sua differenza di potenziale. Pertanto, un watt \u00e8 uguale al prodotto di un amp e un volt. <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-1e3b102bae14df65e598f9a4dcde2865_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P = I\\cdot V \\quad \\color{orange}\\bm{\\longrightarrow}\\color{black}\\quad 1 \\ W = 1 \\ A \\cdot 1 \\ V\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"360\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multiplos-y-submultiplos-del-amperio\"><\/span> Multipli e sottomultipli dell&#8217;Ampere<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Come puoi immaginare, l&#8217;ampere \u00e8 un&#8217;unit\u00e0 ampiamente utilizzata in elettrodinamica, quindi a volte vengono aggiunti dei prefissi per creare unit\u00e0 pi\u00f9 grandi o pi\u00f9 piccole. Quindi, per approfondire un po\u2019 il concetto di ampere, di seguito vedremo quali sono i multipli e i sottomultipli di questa misura.<\/p>\n<p> I <strong>multipli dell&#8217;Ampere<\/strong> sono i seguenti:<\/p>\n<figure class=\"wp-block-table is-style-stripes\">\n<table>\n<thead>\n<tr>\n<th> nome<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> Simbolo<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> Parecchi<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td> decaamp<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> dA<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>101A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> ettoampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> Ah<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>102A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> kiloampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> kA<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>103A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> megaampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> MIO<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>106A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> gigaampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> GEORGIA.<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>109A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> teraampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> TUO<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>1012A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> petaampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> Pennsylvania<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>1015A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> esempioamp\u00e8re<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> EA<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>18<\/sup> UNO<\/td>\n<\/tr>\n<tr>\n<td> zettaamp\u00e8re<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> Z.A.<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>1021A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> yottaamp\u00e8re<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> GI\u00c0<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>1024A<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p> Invece i <strong>sottomultipli dell\u2019ampere<\/strong> sono i seguenti:<\/p>\n<figure class=\"wp-block-table is-style-stripes\">\n<table>\n<thead>\n<tr>\n<th> nome<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> Simbolo<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> Sottomultiplo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td> deciamp\u00e8re<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> dato<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-1A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> centiampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> QUELLO<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-2A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> milliampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> Mio<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-3A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> microampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> \u00b5A<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-6A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> nanoampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> n \/ a<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-9A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> picoampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> Pennsylvania<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-12A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> femtoampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> FA.<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-15A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> attoampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> aa<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-18A<\/sup><\/td>\n<\/tr>\n<tr>\n<td> zeptoampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> zA<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-21<\/sup> A<\/td>\n<\/tr>\n<tr>\n<td> yottoampere<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> Gi\u00e0<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-24<\/sup> A <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Calculadora-para-convertir-amperios-a-otras-unidades\"><\/span> Calcolatrice per convertire gli amplificatori in altre unit\u00e0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> \u00c8 possibile utilizzare il seguente convertitore per convertire tra multipli e sottomultipli dell&#8217;ampere.<\/p>\n<p> Basta inserire il valore dell&#8217;intensit\u00e0 corrente, le unit\u00e0 di conversione e premere il pulsante &#8220;Converti&#8221;. \u00c8 necessario utilizzare il punto come separatore decimale, ad esempio 14.08. <\/p>\n<form action=\"\" method=\"post\">\n<div align=\"center\" style=\"line-height:50px; background:#FEF9E7; padding:15px; border:2px solid #4FD12F; border-radius:15px; margin-bottom:20px\"><input name=\"datos\" style=\"border:1.5px solid #4FD12F; border-radius:5px;  padding:7px; color:#000000; width: 100px\" placeholder=\"1\" required=\"\" oninvalid=\"this.setCustomValidity('Introduce el valor de la intensidad aqu\u00ed')\" oninput=\"this.setCustomValidity('')\"><select name=\"unidad1\" style=\"border:1.5px solid #4FD12F; border-radius:5px;  padding:7px; color:#000000; width: 130px\"><option value=\"1unidad21\"> Yottaamp\u00e8re (YA)<\/option><option value=\"1unidad20\"> Zettaampere (ZA)<\/option><option value=\"1unidad19\"> Esame (EA)<\/option><option value=\"1unidad18\"> Petaampere (PA)<\/option><option value=\"1unidad17\"> Teraampere (TA)<\/option><option value=\"1unidad16\"> Gigaampere (GA)<\/option><option value=\"1unidad1\"> Megaampere (MA)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"1unidad2\"> Chiloampere (kA)<\/option><option value=\"1unidad3\"> Ettoampere (hA)<\/option><option value=\"1unidad4\"> Decaampere (daA)<\/option><option value=\"1unidad5\" selected=\"selected\"> Ampere (A)<\/option><option value=\"1unidad6\"> Deciampere (dA)<\/option><option value=\"1unidad7\"> Centiampere (CA)<\/option><option value=\"1unidad8\"> Milliampere (mA)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"1unidad9\"> Microampere (\u03bcA)<\/option><option value=\"1unidad10\"> Nanoampere (nA)<\/option><option value=\"1unidad11\"> Picoampere (pA)<\/option><option value=\"1unidad12\"> Femtoampere (fA)<\/option><option value=\"1unidad13\"> Attoampere (aA)<\/option><option value=\"1unidad14\"> Zeptoampere (zA)<\/option><option value=\"1unidad15\"> Yoctoampere (yA)<\/option><\/select> <span style=\"color:#4FD12F\">\u279c<\/span> <select name=\"unidad2\" style=\"border:1.5px solid #4FD12F; border-radius:5px;  padding:7px; color:#000000; width: 130px\"><option value=\"2unidad21\"> Yottaamp\u00e8re (YA)<\/option><option value=\"2unidad20\"> Zettaampere (ZA)<\/option><option value=\"2unidad19\"> esameampere (EA)<\/option><option value=\"2unidad18\"> Petaampere (PA)<\/option><option value=\"2unidad17\"> Teraampere (TA)<\/option><option value=\"2unidad16\"> Gigaampere (GA)<\/option><option value=\"2unidad1\"> Megaampere (MA)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"2unidad2\" selected=\"selected\">Chiloampere (kA)<\/option><option value=\"2unidad3\"> Ettoampere (hA)<\/option><option value=\"2unidad4\"> decaampere (daA)<\/option><option value=\"2unidad5\"> Ampere (A)<\/option><option value=\"2unidad6\"> deciampere (dA)<\/option><option value=\"2unidad7\"> Centiampere (CA)<\/option><option value=\"2unidad8\"> Milliampere (mA)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"2unidad9\"> Microampere (\u03bcA)<\/option><option value=\"2unidad10\"> Nanoampere (nA)<\/option><option value=\"2unidad11\"> Picoampere (pA)<\/option><option value=\"2unidad12\"> Femtoampere (fA)<\/option><option value=\"2unidad13\"> Attoampere (aA)<\/option><option value=\"2unidad14\"> Zeptoampere (zA)<\/option><option value=\"2unidad15\"> Yoctoampere (yA) <\/option><\/select><\/p>\n<div style=\"text-align:center\"><input align=\"center\" style=\"font-size:105%; border-radius:30px; margin-top: 20px; margin-bottom:15px\" type=\"submit\" name=\"submit\" value=\"Convertire\"><\/div>\n<\/div>\n<\/form>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Amperio-y-amperio-hora\"><\/span>Ampere e amp-ora<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Infine vedremo qual \u00e8 la differenza tra ampere e amperora, poich\u00e9 sono due misure elettriche spesso confuse.<\/p>\n<p> L&#8217; <strong>amperora<\/strong> , il cui simbolo \u00e8 Ah, \u00e8 un&#8217;unit\u00e0 elettrica utilizzata per misurare la quantit\u00e0 di carica elettrica che un dispositivo pu\u00f2 immagazzinare. Pertanto, un ampere-ora rappresenta la quantit\u00e0 di elettricit\u00e0 che scorre attraverso un conduttore con una corrente continua di un ampere per un&#8217;ora.<\/p>\n<p> Ad esempio, se una batteria ha una capacit\u00e0 di 100 Ah, ci\u00f2 significa che pu\u00f2 fornire una corrente elettrica di 1 A per 100 h, oppure 10 A per 10 h, oppure 100 A per 1 h, ecc.<\/p>\n<p> Pertanto, la <strong>differenza tra un amp e un amp-ora<\/strong> \u00e8 che l&#8217;amp misura l&#8217;intensit\u00e0 della corrente elettrica, mentre l&#8217;amp-ora indica la quantit\u00e0 di energia elettrica che pu\u00f2 fluire in un circuito per un&#8217;ora.<\/p>\n<p> Inoltre, le ore ampere possono essere matematicamente correlate ai coulomb. Come spiegato all&#8217;inizio dell&#8217;articolo, un ampere equivale a un coulomb diviso al secondo, quindi un coulomb equivale a un ampere al secondo.<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-f91ea35d8afc6c6ab17582d16620c4e6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" 1 \\ A = 1 \\ \\cfrac{C}{s} \\quad \\color{orange}\\bm{\\longrightarrow}\\color{black}\\quad 1 \\ A\\cdot s =1 \\ C [\/latex ] Ainsi, on peut conclure qu'un amp\u00e8re-heure \u00e9quivaut \u00e0 3600 coulombs : [latex]1 \\ A\\cdot h=1 \\ A\\cdot h \\cdot \\cfrac{3600 \\ s}{1 \\ h}=3600 \\ A \\cdot s=3600 \\ C\" title=\"Rendered by QuickLaTeX.com\" height=\"114\" width=\"582\" style=\"vertical-align: 0px;\"><\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Questo articolo spiega cosa sono gli amplificatori. Quindi scoprirai non solo cosa significa un ampere, ma anche a cosa serve un ampere e quali sono le differenze rispetto alle altre unit\u00e0 elettriche. Inoltre, potrai convertire tra multipli e sottomultipli dell&#8217;ampere con un calcolatore online. Cos&#8217;\u00e8 un amplificatore? L&#8217; ampere , chiamato anche ampere , \u00e8 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/physigeek.com\/it\/amp\/\"> <span class=\"screen-reader-text\">Amp<\/span> Leggi altro &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-259","post","type-post","status-publish","format-standard","hentry","category-unita"],"yoast_head":"<!-- This site is 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