1820 mein ek professor ke table par compass ki sui achanak hil gayi — aur usi ek pal se aaj ki poori duniya ki motor, pankhe, mixer aur bijli-ghar nikle hain.
6 detailed lessons, ek chalta hua 3D Magnetic Field lab, Fleming rule trainer, Electromagnet explorer aur Ghar ka Circuit simulator — sab easy Roman Hindi mein.
Magnetic field kya hai, field lines ke niyam, aur compass se unhe kaise dekhein.
Oersted ka prayog, right-hand thumb rule, aur field ki disha kaise pata karein.
Apne aap chal raha hai — field lines banti aur ghoomti hain seedhe taar, loop aur solenoid ke aas-paas. Current ULTA karo aur saari lines ko palat'te dekho. Compass ki sui bhi live ghoomti hai!
Ek loop se solenoid tak, aur bijli se magnet banane ka poora tareeka.
Pheere (turns), current aur core badlo — aur dekho magnet kitna taakatwar hota hai. Kitni pinein uthengi?
Fleming ka left-hand rule — force, field aur current ki teen dishaayein.
Do dishaayein di jaayengi, teesri aap bataao. Left hand aur right hand — dono rules ka abhyaas, turant jaanch ke saath.
Bijli se ghumaav (motor), aur ghumaav se bijli (generator). Samajhne ke liye zaroori, exam ke liye nahi.
Live, neutral aur earth wire, short circuit, overloading, fuse aur earthing.
Upkaran chalu karo, short circuit karo, earthing hataao — aur dekho fuse kab udta hai aur kab khatra ban jaata hai.