Video narration
Bijli ka bahaav kitna tez hoga, yeh kaise tay hota hai? Ek nali mein paani sochiye: paani ko dhakelne wala dabaav badhe, to bahaav bhi badhta hai. Bijli mein yahi dhakka voltage hai, aur taar mein behti bijli ki maatra current. Nali jitni sankri, paani ka raasta utna seemit; circuit mein is rukavat ko resistance kehte hain. Yeh samajhne ki tulna hai-paani aur bijli ek jaise nahin hain. Yahi kunji hai: current, voltage ke dhakke aur resistance-dono se tay hota hai. Resistance samaan ho, to voltage badhane se current badhta hai. Voltage samaan ho, to resistance badhane se current ghatta hai; jaise dabaav ek-sa ho, to sankri nali kam paani bahaati hai. Isi rishte ko Ohm ka niyam kehte hain: V = I x R. Yahan V voltage ka dhakka, I current ka bahaav, aur R resistance ki rukavat hai. To bijli ka bahaav? Voltage use badhata hai, resistance seemit karta hai-jaise nali mein dabaav aur rukavat.