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Physics Current Electricity Level: High School

Lightbulb A is rated at 120 V and 40 W for household applications . Lightbulb B is rated at 12 v and 40 W for automotive applications .

a) What is the current through each bulb ?

b) What is the resistance of each bulb ?

c) In one hour, how much charge passes through each bulb ?

d) In one hour, how much energy does each bulb use ?

e) Which bulb requires larger diameter wires to connect its power source and the bulb ?