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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACTransformerEasy2 minPYQ_2007

PhysicsEasysingle choice

A transformer is used to light a $100 W$ and $110 V$ lamp from a $220 V$ mains. If the main current is $0.5 amp$ , the efficiency of the transformer is approximately.NEET 2007

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Answer:

Solution:

The efficiency of transformer $η = \frac{V _{s} I _{s}}{V _{p} I _{p}} \times 100 = \frac{100}{220 \times 0.5} \times 100 = 90%$

Stream:NEETSubject:PhysicsTopic:EMI/ACSubtopic:Transformer

⏱ 2mℹ️ Source: PYQ_2007

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