A bulb has a power of low calculate the current it draws when connected across a battery of 12v
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Answer :
6watts
Explanation :
power of the battery =12v(given)
Current drawn by the battery =0.5a
(Given)
Power is defined as the rate at which a work is done. Since, the work is energy transfer, power is also the rate at which energy is expended. As per the ohm's law equation,
the formula for power is v=l×R or
Power =voltage ×current
Power =12×0.5
Power =6
Power =6watts
THUS, it an electric lamp is connected to 12v battery it draws a current 0.5a then the power of lamp is 6watts..
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