Video narration
Kampas ki sui, taar ke paas jaate hi kyon mud jaati hai? Taar mein bahti vidyut dhaara uske chaaron or ek adrishya magnetic field banati hai. Yahi field paas ki kampas sui ko modti hai. Sui bijli ko seedhe nahin, uske chumbakiya prabhav ko mehsoos karti hai. Yahi siddhant electromagnets, speakers aur motors mein kaam aata hai. Rahasya ka uttar: current-carrying wire magnetic field banata hai, aur vahi field kampas sui ko dhakka deta hai.