Calculator

Wepụta maka voltaji, ọfụụ, resistance mọọbụ ike - tinyekwa ọbụla abụọ nke anọ.

Wepụta maka ? Valiu ị na-ewepụ maka bụ nke a na-apụta site na abụọ ị na-ebanye.

Volta

Oge ọfụụ

Nhazi

Ike ?

Tinye ike n'ebe ahụ nke V/I/R ka echepụta ya.

Voltaji (V) —

Oge ọfụụ —

Nhazi —

Ike (W) —

Nhọrọ ndị ahụ ga-akpụzi mgbe ị na-etipụta.

Ọ bụrụ na ọbụna ọbụ

N'ihe banyere calculator a

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.

Ajụjụ ndị a na-ajụkarị

Gịnị bụ iwu Ohm?

Ohm's iwu na-ekwu na current site na a conductor bụ proportional na voltage n'elu ya: V = I × R. Rearranged, I = V / R na R = V / I.

Olee otú m ga-esi hụ ike eletriki site n'iwu Ohm?

Ike bụ voltage oge ugbu a, P = V × I. Na-eji iwu Ohm ị nwere ike ịdekọ ya dị ka P = I² × R ma ọ bụ P = V² / R - niile atọ na-enye otu watts.

Valiu abụọ ole ka m ga-ebanye?

Họrọ ọnụọgụgụ ị na-enweghị na "Solute maka", mgbe ahụ tinyekwa ọbụla abụọ n'ime ndị ọzọ atọ. Iji chọpụta mgbaàmà ị nwere ike ịnye voltaji na ọfụụ, mọọbụ ike na ọfụụ.

M ga-eji ike na-enweghị voltaji mọọbụ ugbua dịka n'ime?

Ee. Oge ike n'elu na-enye gị ohere ịrụzi site na ike nakwa otu n'ime ihenhọrọ ndị ọzọ - dịka ọmụmaatụ, 24 W n'ime 2 A na-eziga 12 V na 6 Ω, na-eji V = P / I na R = P / I².

Ọrụ iwu Ohm maka AC circuits?

Ọ na-abịa n'ụzọ ziri ezi na akụkụ resistive nke AC circuit. Maka circuits na capacitors ma ọ bụ inductors ị na-atụgharị resistance na impedance, na ike na-abịa n'ihe kpatara ike, mana a plain resistor obeys V = I × R na oge ọ bụla.

Gịnị mere m ji enweta ọkụ na-ekpo ọkụ na resistor m - olee ike ọ na-ewepụ?

A resistor na-atụgharị ike eletriki n'ime okpomọkụ na P = I² × R watts. A 6 Ω resistor na-eburu 2 A na-ewepụ 4 × 6 = 24 W, ya mere ọ chọrọ ike n'ime n'elu nke ahụ. Undersizing the wattage bụ ihe na-emekarị nke na-akụ ma ọ bụ na-akwụsị resistors.

Ọ na-elekọta non-linear parts dịka diode mọọbụ LEDs?

Ọ dịghị. Ohm's iwu na-atụ anya a na-adịgide adịgide resistance, ya mere ọ bụghị model diodes, LEDs ma ọ bụ transistors nke ugbu a na-arị elu non-linearly na voltage. Maka a LED ị na-ebe a size nke a series resistor si na-enye voltage na-abawanye na LED na-aga n'ihu voltage.

API — jiri kaadị a site na kóòdù

Kpọọ kalkulata a dịka ebe ngwụcha JSON n'efu - enweghị kii achọrọ. Ziga valiu ebe ahụ n'okpuru dịka paramita ajụjụ mọọbụ JSON. Ihe ọbụla ị na-ewepụ na-eji dìfọ́ọ̀ltụ̀ nke a na-edebe ihuakwụkwọ a na ya; parameter a na-amaghị bụ 400, ọ dịghị sẽọ̀rọ̀. Gụọ ngwe ndị ahụ niile →

Ebemkpofuozi

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);

Ihe a na-ahụta bụ n'ihi nlekọta n'ozuzu ya, ọ bụghị nlekọta ego, ọgwụ ma ọ bụ nlekọta ego.

N'ihe banyere calculator a

Ajụjụ ndị a na-ajụkarị

Calculators

Ebemkpofuozi

curl

JavaScript fetch()

JavaScript `fetch()`