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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACTransformerEasy2 minPYQ_2020

PhysicsEasysingle choice

The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an AC supply of 120 V and the current flowing in it is 10 A. The voltage and the current in the secondary are

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Solution:

$\frac{E_{s}}{E_{p}} = \frac{n_{s}}{n_{p}} o r E_{s} = E_{p} \times (\frac{n_{s}}{n_{p}})$

$∴$ $E_{s} = 120 \times (\frac{200}{100}) = 240 V$

$\frac{I_{p}}{I_{s}} = \frac{n_{s}}{n_{p}} o r I_{s} = I_{p} (\frac{n_{p}}{n_{s}})$

$∴$ $I_{s} = 10 (\frac{100}{200}) = 5 A$

Subject:PhysicsTopic:EMI/ACSubtopic:Transformer

⏱ 2mℹ️ Source: PYQ_2020

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