Question

A bulb of resistance 400 ohm is connected to 200V mains .Calculate magnitude of current

Answer 1

Answer:

From Ohm's Law, it is know that,

V = I*R i.e. the voltage across the ends of a conductor equals the current through it times the resistance offered by the conductor,

or, 220V = I*400 ohm

or, I = 220/400 A

= 55/100 A

= 0.55 A, that is the current through the given wire.

Answer 2

Answer:

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