Kalkulatur tal-Liġi ta' Ohm
Solvi għall-vultaġġ, kurrent, reżistenza jew enerġija — jidħlu kwalunkwe tnejn mill-erba.
Riżultati aġġornament kif inti tip.
Dwar din il-kalkulatur
Ohm's law is the single most-used relationship in electronics: the voltage across a resistor equals the current through it times its resistance, V = I × R. Rearranged, the current is I = V / R and the resistance is R = V / I. Power — the rate at which the component turns electrical energy into heat or work — adds a second relationship, P = V × I, which combines with Ohm's law to give the two equivalents P = I² × R and P = V² / R. Together these four quantities form the V–I–R–P 'Ohm's law wheel', and knowing any two of them fixes the other two.
This calculator lets you pick which quantity to solve for and enter any two of the others, then returns the full wheel plus the three equivalent power formulas side by side. For example, a 12 V supply driving a 6 Ω resistor gives I = 12 / 6 = 2 A and P = 12 × 2 = 24 W; check it with P = I² × R = 4 × 6 = 24 W and P = V² / R = 144 / 6 = 24 W, all agreeing. Because the tool back-fills every missing value, entering power and current instead is just as valid — 24 W at 2 A returns 12 V and 6 Ω.
Ohm's law holds exactly for any DC resistive circuit and for the resistive part of an AC circuit, which makes it the everyday tool for sizing current-limiting resistors, choosing LED droppers, working out fuse and wire ratings, reading how much a heater or motor will draw, and predicting the heat a resistor must dissipate. It does not by itself describe capacitors, inductors or non-ohmic parts like diodes, where the voltage–current relationship is no longer a straight line.
Mistoqsijiet li jsiru ta' spiss
X'inhi l-liġi ta' Ohm?
Il-liġi ta’ Ohm tiddikjara li l-kurrent minn konduttur huwa proporzjonali għall-vultaġġ li jkun hemm madwaru: V = I × R. Meta jiġi rranġat mill-ġdid, I = V / R u R = V / I.
Kif issib enerġija elettrika mill-liġi ta’ Ohm?
Il-qawwa hija l-kurrent tal-ħinijiet tal-vultaġġ, P = V × I. Bl-użu tal-liġi ta ’Ohm tista’ tikteb ukoll bħala P = I² × R jew P = V² / R — it-tlieta jagħtu l-istess watts.
Liema żewġ valuri għandi nidħol?
Agħżel il-kwantità li inti nieqsa fil-"Solve for", imbagħad jidħlu xi tnejn mit-tliet l-oħra.Biex issib reżistenza inti tista provvista vultaġġ u kurrenti, jew enerġija u kurrenti.
Nista' nuża l-enerġija minflok vultaġġ jew kurrent bħala input?
Il-qasam avvanzata tal-qawwa jippermettilek issolvi mill-qawwa flimkien kwantità oħra waħda — per eżempju, tagħbija 24 W fi 2 A ritorni 12 V u 6 Ω, bl-użu V = P / I u R = P / I².
Does-liġi Ohm jaħdem għall-ċirkwiti AC?
Dan japplika direttament għall-parti resistive ta 'ċirkwit AC. Għal ċirkwiti b'kapaċituri jew indutturi inti tissostitwixxi reżistenza bl impedenza, u l-enerġija picks up fattur qawwa, iżda resistor sempliċi obeys V = I × R f'kull istant.
Għaliex ma resistor tiegħi gets sħun - kemm enerġija ma jiddissipa?
Resistor idawwar l-enerġija elettrika fis-sħana f'P = I² × R watts. Resistor 6 Ω li jġorr 2 A jiddissipa 4 × 6 = 24 W, għalhekk jeħtieġ klassifikazzjoni tal-qawwa komda 'l fuq minn dik.
Dan jimmaniġġja partijiet mhux lineari bħal diodes jew LEDs?
Il-liġi ta’ Ohm tassumi reżistenza kostanti, għalhekk ma timmudellax dijossi, LEDs jew transistors li l-kurrent tagħhom jogħla b’mod mhux lineari mal-vultaġġ. Għal LED minflok tiddiżamina resistor f’serje mill-vultaġġ tal-provvista nieqes il-vultaġġ tal-LED quddiem.
API — uża din il-kalkulatur mill-kodiċi
Sejjaħ dan il-kalkulatur bħala punt aħħari JSON b'xejn — l-ebda ċavetta meħtieġa Ibgħat il-valuri tal-qasam hawn taħt bħala parametri tal-mistoqsija jew JSON. Kull ħaġa li tħalli barra tuża l-istess default li din il-paġna hija mimlija minn qabel; parametru mhux magħruf huwa 400, qatt żero sieket. Aqra d-dokumenti sħaħ tal-API →
Punt aħħari
GET https://calculator.free/api/v1/ohms-law/curl
curl "https://calculator.free/api/v1/ohms-law/?solve=r&voltage=12¤t=2&resistance=6"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/ohms-law/?" + new URLSearchParams({
"solve": "r",
"voltage": "12",
"current": "2",
"resistance": "6"
}));
const data = await r.json();
console.log(data.results);Ir-riżultati huma stimi għal gwida ġenerali biss, mhux parir finanzjarju, mediku jew tat-taxxa.