Kalkulator Hukum Ohm
Solve for voltage, current, resistance or power — enter any two of the four.
Hasilne bakal dioptimalake nalika sampeyan ngetik.
Ngenai kalkulator iki
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.
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Apa hukum Ohm?
Hukum Ohm nyathet yen arus listrik liwat konduktor proporsional karo tegangan listrik: V = I × R. Disusun maneh, I = V / R lan R = V / I.
Kepiye aku nemokake daya listrik saka hukum Ohm?
Kualitas listrik diukur ku tegangan listrik, P = V × I. Ku ngagunakeun hukum Ohm, kakuatan listrik bisa ditulis minangka P = I² × R atawa P = V² / R — tilu-tiluna ngahasilkeun watt anu sami.
Dumuginipun, kalih nilai ingkang kula simpen?
Pilih kuantitas anu anjeun henteu mendakan dina "Solusi pikeun", teras lebetkeun dua tina tilu anu sanés. Pikeun mendakan resistansi anjeun tiasa nyayogikeun voltase sareng arus, atanapi kakuatan sareng arus.
Bisakah aku nggunakake daya tinimbang voltase utawa arus minangka input?
Ya. Medan kakuatan maju ngidinan anjeun pikeun ngarengsekeun tina kakuatan ditambah hiji kuantitas séjén - contona, beban 24 W dina 2 A balik 12 V sareng 6 Ω, nganggo V = P / I sareng R = P / I².
Apa hukum Ohm kerja kanggo sirkuit AC?
Ieu langsung diterapkeun ka bagian resistif sirkuit AC. Pikeun sirkuit kalayan kondensor atanapi induktor anjeun ngaganti resistansi ku impedansi, sareng kakuatan nyandak faktor kakuatan, tapi resistor biasa patuh V = I × R dina unggal waktos.
Apa sing dadi masalahe, apa sing dadi masalahe, apa sing dadi masalahe?
A resistor ngarobah énergi listrik kana panas di P = I² × R watts. A 6 Ω resistor ngandung 2 A dissipates 4 × 6 = 24 W, jadi éta peryogi rating kakuatan nyaman di luhur éta. Undersizing the watt is the usual cause of burned or failed resistors.
Apa iki bisa ngolah bagean non-linear kaya ta diode utawa LED?
No. Ohm hukum ngaduga résistansi konstan, jadi éta teu model diodes, LEDs atawa transistors nu ayeuna naek non-linearly kalawan voltase. Pikeun LED anjeun malah ukuran resistor serial ti voltase suplai kurang LED forward voltase.
API — gunakake kalkulator iki saka kode
Ngadongékeun kalkulator ieu minangka titik akhir JSON bébas — teu peryogi kunci. Kirim nilai medan di handapeun minangka parameter pitakonan atawa JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Waca dokumen lengkap API →
Tampilan
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);Hasilna nyaéta perkiraan pikeun pituduh umum, henteu saran finansial, médis atanapi pajak.