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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACTransformerEasy2 minPYQ_2021

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A step down transformer connected to an ac mains supply of $220 V$ is made to operate at $11 V, 44 W$ lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?NEET 2021

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Answer:

Solution:

Power loss is zero. Hence, output Power is equal to input Power.

So, Input Power, $P_{1} = 44 W$

$\Rightarrow V_{1} i_{1} = P_{1}$

$\Rightarrow i_{1} = \frac{P_{1}}{V_{1}} = \frac{44}{220} = 0.2 A$

Stream:NEETSubject:PhysicsTopic:EMI/ACSubtopic:Transformer

⏱ 2mℹ️ Source: PYQ_2021

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