The output power in a step-up transformer is ___________.

Greater than the input power

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Equal to the input power

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Maintained even during the power cut

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Less than the input power

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Solution

The correct option is B Equal to the input power
In step-up transformer power remains same and voltage increases and current decreases.
$\Rightarrow V_{i} I_{i} = V_{o} I_{o}$
So,the output power in a step-up transformer is equal to the input power.
Therefore, B is the correct option.

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