A current of 4 ampere flows through a
12 volt car headlight bulb for 10 min.
How much energy transfer occurs during
this time.( in kwh).
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power loss on headlight p = V * I
=> p = 48 W
so energy loss in Kwh = 48 * (10/60) / 1000
= 8 * 10 ^-3 kwh
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