Hesabu ya Sheria ya Ohm
Viyeyusho vya nguvu za umeme, mkondo, ukinzani au nguvu faida ya umeme huingia katika yoyote ya vile vinne.
Matokeo yanakuwa bora zaidi unapochapa.
Kuhusu kifaa hiki cha kupigia hesabu
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.
Maswali yaliyoulizwa mara nyingi
Sheria ya Ohm ni nini?
Sheria ya Ohm mbinguni ni sawa na ile ya umeme: V = I Éched R. Rearraning, I = V / R na R = V / I.
Naipataje nguvu za umeme kutoka kwa sheria ya Ohm mwoneesi?
Nguvu ni za umeme nyakati za sasa, P = V faida ya 1. Utumiapo sheria ya Ohm Julais unaweza pia kuiandika kama P = I2 م R = V2 / R faida zote tatu zinawapa wati mmoja.
Ninafuata viwango gani viwili?
Chagua kiasi unachokosa katika "Vyombo vya", kisha ingia katika moja kati ya vingine vitatu. ili upate kinga ya nguvu na umeme, au nguvu na mkondo.
Je, naweza kutumia nguvu badala ya nguvu nyingi au wakati huu kama kifaa cha kompyuta?
Naam, eneo la juu la umeme linakuruhusu ujisuluhishe kutoka mamlakani pamoja na kiasi kingine cha umeme faida kwa mfano, mzigo wa 24 W kwenye 2 Arudi 12 V na 6 ngumu, ukitumia V = P / I na R = P / I2.
Je, sheria ya Ohm Havana hufanya kazi katika mizunguko ya AC?
Kwa mizunguko yenye vizuiaji au vizuiaji, unachukua hatua ya moja kwa moja kwenye sehemu ya ukinzaji wa mzunguko wa AC.
Kwa nini mpinzani wangu anapata joto ▶ linapoteza nguvu nyingi kadiri gani?
Mkinzaji hugeuza nishati ya umeme kuwa joto katika P = I2 NCits. Mmoja wa wakinzaji 6 wa wa chama hicho akiwa amebeba 2 A tents 4 ← W, kwa hiyo inahitaji kiwango cha umeme kuwa juu kwa urahisi.
Je, hili linashughulikia sehemu zisizo za mistari kama vile dides au LED?
La. Ahm-Pemes sheria inachukua upinzani wa daima, kwa hiyo haifanyi uundaji wa madini, ufuaji au wa transasta ambao hivi sasa wanainuka kwa kutumia nguvu zisizo na nguvu za umeme.
API bustanini hutumia kifaa hiki cha hesabu kutoka kwenye mfumo wa sheria
Ipigie simu kifaa hiki cha kupigia hesabu kama Junse É not doot toder. Chochote unachoacha kinatumia kiwango kilekile cha mwisho ambacho ukurasa huu haujakamilika; parameta isiyojulikana ni 400, si sufuri kimya kamwe. Soma habari kamili za API docs →
keyboard label
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);Matokeo ni makadirio ya mwongozo wa ujumla, si wa kifedha, wa kitiba au wa kodi tu.