GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Power is defined as the
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force on an object times the distance the object moves.
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force on an object divided by the time the force acts.
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work done times the time taken to do that work.
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work done on an object divided by the time to do the work
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Explanation:
Detailed explanation-1: -Power is the rate at which work is done. In this case, rate means per unit of time. Power is calculated by dividing the work done by the time it took to do the work. P = W t P = W t.
Detailed explanation-2: -The dimension of power is energy divided by time. In the International System of Units (SI), the unit of power is the watt (W), which is equal to one joule per second.
Detailed explanation-3: -How do you calculate time from power and work? Since power is the amount of work per unit time, the duration of the work can be calculated by dividing the work done by the power.
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