Àwọn Àṣẹ

Ṣàfikún fún vólétì, ìjánu-ìjánu, ìdáràn tabi ìpàpọ̀ - tẹ̀ àwọn à

Àwọn àwọn ààyè-iṣẹ́ ? Àwọn fálù tí o tí n pàṣẹ̀ fún nípa àwọn meji tí o tì fìpamọ́.

Ìjánu-ìṣàmúlò-ètò

Àwọn Ìjánu-ìsún

Àwọn ìṣàfarawé

Àwọn Ìṣàmúlò-ètò ?

Fi àwọn ìṣẹ̀dà àti àwọn ìṣàmúlò-ètò inú àwọn ààyè-iṣẹ́ ààyè-iṣẹ́ àti àwọn ààyè-iṣẹ́ ààyè-iṣẹ́ pamọ́.

Voltage (V) —

Àwọn Ìjánu-ìṣàmúlò-ètò —

Ìgbàdúró —

Power (W) —

Àwọn Àtòjọ-ẹ̀yàn àwọn ìṣàmúlò-ètò

Ńlà àwọn àwọn ààtò àtòjọ-ẹ̀yàn yìí?

Àkóónú ìṣàmúlò-ètò yìí

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.

Àwọn Àtòjọ-ẹ̀yàn

Kini àwọn ìṣẹ̀dà tí Ohm lò?

Aṣẹ Ohm sọ pe agbara ti o wa ni ọna conductor jẹ ibatan si agbara ti o wa ni ọna rẹ: V = I × R. Ti a ba ṣeto pada, I = V / R ati R = V / I.

Bawo ni mo ṣe lè rí ìṣẹ̀dà ìfẹ́fẹ́ láti inú ìṣẹ̀dà Ohm?

Iṣẹ́gun ní igbá tí a fi pọ́lẹ́tì pọ́jú, P = V × I. Nínú ofiń Ohm̀ ní a lè kọ́ ò bi P = I² × R tabi P = V² / R — gbogbo àwọn mẹ́tà náà ǹfi wátì kaǹ nípa.

Àwọn fálù meji wo ni mò fi pamọ́?

Yan àwọn ìwọ̀n tí o kù nínú "Ṣàfikún fun", láti sé àwọn à

Ń lè ló ìgbàra-ètò láti fi agbara mù láti fi àwọn ìṣàmúlò-ètò tí a fẹ́ jẹ́?

Ya. Ààyè ìpàpọ̀ ìpéwọ̀n ìpéwọ̀n náà náà gbá ọ láti ṣòró láti inú ìpéwọ̀n àti àwọn ìpéwọ̀n mìíràn - fun àwọn ààyè, àwọn ààyè 24 W ní àwọn 2 A gbá 12 V àti 6 Ω, láti lo V = P / I àti R = P / I².

Ńwò nínú àwọn ààyè-iṣẹ́ tí a fi ṣẹ́ fun àwọn sàírikíti AC?

Ó ló láti inú àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́ tí a fi hàn nípa àwọn ààyè-iṣẹ́.

Kini idi ti resistor mi fi di gbona - bawo ni agbara ti o ti pọ̀ jù lọ?

Resistor kan yi agbara eletiriki pada sí ina ni P = I² × R watts. Resistor 6 Ω kan tí n gbọ́ 2 A ṣípa 4 × 6 = 24 W, bẹ́ẹ̀ ní a fẹ́ agbara tí a lè fi pamọ́. Àwọn wátàjì tí a fi àwọn resistors tí a tí ìpàdé jù lọ nípá àwọn resistors tí a tí ìpàdé jù lọ.

Àwọn àwọn ààyè-iṣẹ́ àwọn ààyè-iṣẹ́ àwọn àwọn ààyè-iṣẹ́ àwọn à

Kò. Àwọn ìṣẹ̀dà Ohm̀ gbá àwọn ìgbàdá tí a tílẹ̀, láti jẹ́ pé kò jẹ́ àwọn módèlè̀ diòdìò, LEDs tàbí transistors tí ìgbàdá wọn tí n pọ̀ jú àwọn ààyè lọ́wọ́lọ́wọ́ lọ́wọ́lọ́wọ́. Fún LED kan, ò lè fi àwọn ìṣàfarawé àwọn ìgbàdá àwọn ààyè lọ́wọ́lọ́wọ́ lọ́wọ́lọ́wọ́ LED.

API — ló àwọn ìṣàmúlò-ètò yìí láti inú ìṣàmúlò-ètò

Fi àwọn ìṣàmúlò-ètò yìí kọ̀ǹpútà yìí láti jẹ́ ààyè-iṣẹ́ JSON tí a tí fi pamọ́ - kò ní bọ́tìnì kan tí a fẹ́. Fi àwọn fálù ààyè-iṣẹ́ sílẹ̀ sí bí àwọn àwọn ìṣàmúlò-ètò àti JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Ka àwọn àkọlé API kíkún →

Àwọn Ààyè Ìjánu-ìṣàmúlò-ètò

GET https://calculator.free/api/v1/ohms-law/

curl

curl "https://calculator.free/api/v1/ohms-law/?solve=r&voltage=12&current=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);

Results are estimates for general guidance only, not financial, medical or tax advice.

Àkóónú ìṣàmúlò-ètò yìí

Àwọn Àtòjọ-ẹ̀yàn

Àwọn Ìṣàmúlò-ètò Ìṣàmúlò-ètò

Àwọn Ààyè Ìjánu-ìṣàmúlò-ètò

curl

JavaScript fetch()

JavaScript `fetch()`