Video narration
Agar kisi circuit mein 12 volt, 6 ohm ke pratirodh par lage hon, to current kitna bahega? Ek technician multimeter se gyaat value maapkar unknown nikalta hai. Yahan V voltage, I current, R resistance, aur P power ko darshate hain. Ohm's Law ka seedha sambandh hai: V = IR - voltage, current aur resistance ka gunanphal hai. Ab missing quantity pahchaniye. Current chahiye, to equation ko rearrange karke I = V/R: multimeter ki reading ke anusaar 12 volt ko 6 ohm se bhaag den - current 2 ampere. Resistance chahiye to R = V/I - voltage ko current se divide karein. Yahi mukhya baat hai: ye teen alag rules nahin hain; ek hi V = IR hai, jise unknown ke anusaar badalte hain. Phir power ke liye alag sambandh lagaiye: P = VI. 12 volt aur 2 ampere, yani 24 watt. Vaastavik equipment mein assumptions nahin, measured values lijiye. To shuruaati circuit mein current kitna tha? 12 volt divided by 6 ohm - sirf 2 ampere.