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A current of 0.50A flows through a 200W resistor. How much power is lost in the resistor?
A bulb rated 240 V/90 W is operated from a 240V power source. Find the current flowing through it.
A bulb rated 120 V/90 W is operated from a 120V power source with a current of 0.75A flowing through it. Find its resistance.
What is the power output of a 1.5V ideal battery which is delivering a current of 0.2 A?
What is the resistance of a 1000W 240V air conditioner?
An ideal battery with e.m.f. 12 V is connected in series to two bulbs with resistances R1 = 2 W and R2 = 4 W. What is the power dissipation in the 2 W resistor?