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Question
An electric bulb is connected to a 220 V power supply line. If the bulb draws a current of 0.5 A, calculate the power of the bulb.
Solution
Here, V = 220 V and I = 0.5 A
(given)
Power drawn by the device is given by:
P = VI
Therefore:
P = 220 x 0.5
= 110 W
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