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Question

An electric bulb of rating 50 W is used for 8 hours in one day. Find the number of units of energy used by the electric bulb.



Your Answer
A

200 unit

Correct Answer
B

0.4 unit

Your Answer
C

0.6 unit

Your Answer
D

400 unit


Solution

The correct option is A

0.4 unit


Given, power = 50 W = 0.05 kW
So, energy consumed : 

0.05 × 8 h = 0.4 kWh = 0.4 unit.

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