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3. A 10 Watt bulb runs for 10 hours in a day. How much energy would it consume in a day?

A. 1 Watt-hour
B. 10 Watt-hour
C. 100 Watt-hour
D. 1000 Watt-hour

Answer :

Final answer:

The 10 Watt bulb would consume 2400 Watt-hours of energy in a day.


Explanation:

In order to find the energy consumed by the 10 Watt bulb in a day, we need to multiply its power by the time it runs for. The formula for power is given by: Power = Current x Voltage. Since the voltage is not given, we can assume it to be the standard value of 240 Volts. Therefore, Power = 10 Watts x 240 Volts = 2400 Watt-hours. So, the bulb would consume a total of 2400 Watt-hours of energy in a day.


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