Ohm's Law Calculator
Volga, akymy, rezistensi ýa-da güýji üçin çöz -- dörtden her haýsy ikisini giriz.
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Bu hasapçy hakda
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.
Köp soralýan soraglar
Omyň kanuny näme?
Ohm's Law states that the current through a conductor is proportional to the voltage through it: V = I × R. Rearranged, I = V / R and R = V / I.
Men Ohm's Law'dan elektrik güýjüni nädip tapyp bilerin?
Güç, wältaj bilen akymyň birleşmesi, P = V × I. Ohm's Law'y ulanyp ony P = I² × R ýa P = V² / R diýip ýazyp bilersiň — üçüsiniň hemmesi bir watty berýär.
Haýsy iki mykadry girizmeli?
"Solve for" içinde eksik bolan mukdary saýla, soňra beýleki üçden ikisini giriz. Rezistensi tapmak üçin, siz volt we akymy ýa-da güýji we akymy girizip bilersiňiz.
Men girdeji hökmünde woltaj ýa-da akymyň ýerine güýji ulanyp bilerinmi?
Eý. Öňdebaryjy güýç meýdançasy size güýçden we başga bir mukdardan çözmek üçin mümkinçilik berýär - mysal üçin, 24 W ýük 2 A-da 12 V we 6 Ω-y getirýär, V = P / I we R = P / I² ulanyp.
Ohm's Law works for AC circuits?
Bu AC gyranyň rezistensiýa bölegine dogrydan dogrydan degişlidir. Kondensatorlar ýa-da indüktorlar bilen gyralar üçin siz rezistensiýany impedans bilen çalşyrsyňyz, we güýç bir güýç faktoryny alar, emma bir saplaň rezistensiýa her bir pursatda V = I × R-a boýun egýär.
Meniň rezisterim näme üçin gyzýar - näçe güýç ýitirýär?
A resistor turns electric energy into heat at P = I² × R watts. A 6 Ω resistor carrying 2 A dissipates 4 × 6 = 24 W, so it needs a power rating comfortably above that. Undersizing the wattage is the usual cause of burned or failed resistors.
Bu diodlar ýa-da LEDler ýaly çyzgysyz bölekleri dolandyrýarmy?
Haýal. Ohm's Law bir durnukly rezistensi kabul eder, şuňa görä ol diodlary, LED'leri ýa-da transistörüleri modellemeýär, olaryň akymy voltaj bilen çuňlukly ýokarlanmaz. LED'ler üçin siz bir seriýa rezistensi üpjünçilik voltajyndan LED'iň öňki voltajyndan az bir ölçegine ölçemeli.
API — bu hasapçyny koddan ullan
Bu hasapçyny boş JSON ahtar noktasy hökmünde çagyr - açar gerek däl. Aşakdaky meýdança mykdarlaryny soragyň parametrleri ýa-da JSON hökmünde iber. Siziň goýmaýan hernäňiz şu sahypanyň öň bellenen öň bellenenini ulanýar; namydar parametr 400, hiç wagt sessiz sıfır däl. Eňlisçe senedleri oka →
Endpoint
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);Netijeler diňe umumy ýardam üçin hasaplanypdyr, maliýe, saglyk ýa-da salgyt maslahaty üçin däl.