SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Efficiency is equal to
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useful energy transferred / total energy input
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total energy input / useful energy transferred
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Efficiency is defined as the useful energy output divided by the total energy input.
Detailed explanation-2: -Efficiency is the ratio of useful energy that comes out of a device to the total energy that went into it. Remember that energy cannot be destroyed, but it can be converted from one form to another.
Detailed explanation-3: -Work, power and efficiency Energy is a key principle in physics, as it allows work to be done. The rate at which energy is transferred is called power and the amount of energy that is usefully transferred is called efficiency.
There is 1 question to complete.