A lamp is marked 220V 60 W. Calculate the energy it would consume when connected to a 220V source for 1 hour.
Question 1 Report
A lamp is marked 220V 60 W. Calculate the energy it would consume when connected to a 220V source for 1 hour.
Answer Details
The lamp has a power rating of 60W and is connected to a 220V source. We can calculate the current consumed by the lamp using Ohm's Law:
I = P/V
Where I is the current, P is the power and V is the voltage.
So, I = 60W / 220V = 0.27A
The energy consumed by the lamp in one hour can be calculated using the formula:
Energy = Power x Time
Where Time is the duration for which the lamp is switched on.
Therefore, Energy = 60W x 1 hour = 60 Wh = 60 x 3600J = 216000J
Therefore, the energy consumed by the lamp when connected to a 220V source for 1 hour is 216000J.
Hence, the correct option is (a) 216000J.
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