Xeerka Ohm ee xisaabinta
Xalka voltage, hadda, diidmada ama awoodda — galaya laba ka mid ah afarta.
Natiijooyinka cusbooneysiinta sida aad ku qorto.
Ku saabsan Kalkaaliyahan
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.
Su'aalaha badanaa la isweydiiyo
Maxay tahay sharci Ohm?
Xeerka Ohm ee sheegaysa in hadda ka soo gudbay conductor waa la mid ah voltage ka dhex: V = I × R. Rearranged, I = V / R iyo R = V / I.
Sideen u heli karaa awoodda korontada ka sharciga Ohm?
Xoogga waa jeer volt current, P = V × I. Iyadoo la isticmaalayo sharciga Ohm waxaad sidoo kale ku qori kartaa sida P = I² × R ama P = V² / R — saddexda oo dhan siiyaan wats isku mid ah.
Waa maxay laba qiimo aan galay?
Dooro tirada aad ku maqan tahay "Solute for", ka dibna ku dar laba ka mid ah saddexda kale. Si aad u hesho diidmada waxaad ku siin kartaa voltage iyo hadda, ama awood iyo hadda.
Ma awoodaan inaan isticmaalno awooda in kastoo voltage ama hadda sida soo-gaadhista?
Haa. Iskuulka awoodda horumarsan kuu ogolaanaya inaad ka xalliso awoodda iyo mid kale oo kale - tusaale ahaan, 24 W oo ku yaal 2 A wuxuu ku celinayaa 12 V iyo 6 Ω, iyadoo la adeegsanayo V = P / I iyo R = P / I².
Ma sharciga Ohm ee shaqada AC circuits?
Waxay si toos ah u khuseysaa qaybta resistive ee AC circuit. For circuits with capacitors ama inductors aad bedeli kartaa iska caabinta la impedance, iyo awooda soo qaadaa saamiga awoodda, laakiin resistor caadiga ah waa V = I × R oo waqti kasta.
Maxaa ka dhigaya resistorkayga ku qabow - sidee awood badan ma ay kala firdhiyaan?
A resistor ku wareegsan tamarta korontada ku kulul P = I² × R watts. A 6 Ω resistor qaadashada 2 A kala firdhiso 4 × 6 = 24 W, sidaas darteed waxay u baahan tahay awood qiimeyn raaxo leh ka sarreeya in. Undersizing the wattage waa sababta caadiga ah ee bur bursan ama ku fashilmeen resistors.
Maxaa ka qabanaya qaybaha aan-linear sida diodes ama LEDs?
No. Ohm ee sharciga u maleynayaa in difaaca joogto ah, sidaas darteed ma aha oo qaab diode, LEDs ama transistors kuwaas oo hadda kor u kacdo aan-linearly la voltaj. Si aad u LED aad si ka duwan u miisaanka series resistor ka voltage siinta ka yar LEDs difaaca hor.
API — isticmaal xisaabinta ka code
Wici xisaabinta sida free JSON endpoint - key ma loo baahan yahay. Dib u soo dir qiimaha goobta hoos ku qoran sida parameters su'aal ama JSON. Wax kasta oo aad ka maqan tahay isticmaalaa default la mid ah ee boggani waa hore loo buuxiyey la; parameter aan la aqoon waa 400, marnaba ma aha zero maqan. Akhri dhammaan API xuquuqda →
Xarafka
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);Natiijooyinka waa tirakoobka loogu talagalay tilmaamaha guud oo keliya, maaha dhaqaale, caafimaad ama talo bixin canshuur.