Video narration
Phone charger mein likhe ye alag-alag chinh aakhir ek saath kaise kaam karte hain? Board ko baen se daen padhiye - har matra agli ko samjhati hai. Sabse pehle, aavesh - vidyut ki matra; iski ikai coulomb hai. Jab aavesh samay ke saath bahta hai, dhaara banti hai: I = Q/t. Iski ikai ampere hai - ek second mein bahne wala aavesh. Ab voltage batata hai ki har ikai aavesh ko chalane mein kitna karya hua: V = W/Q. Iski ikai volt hai. Phir resistance - dhaara ke bahaav ki rukavat. Ab alag tathya judte hain: Ohm's law, V = IR. Voltage dhaara ko resistance ke paar chalata hai, aur resistance use seemit karti hai. Yahin suchi ek kaam karti shrinkhla ban jaati hai: vahi current power pahunchaata hai. Power P = VI; iski ikai watt hai. Energy, power aur time ka gunanphal hai. Badi khapat kilowatt-hour mein maapte hain: 1 kWh = 3.6 x 10^6 J. To jawab hai - ye alag sutra nahin: aavesh dhaara bankar bahta hai, voltage use chalaata hai, resistance seemit karti hai, aur power parinaam maapti hai.