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Electrical Oscillations

A transformer...

Question

A transformer connected to $220$ volt line shows an output of $2 A$ at $11000 V$ . The efficiency is $100$ %. The current drawn from the line is:

A

100 A

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B

200 A

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C

22 A

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D

11 A

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Solution

The correct option is A $100 A$
For an ideal transformer
$V_{s} I_{s} = V_{p} I_{p}$
or, $2 \times 11000 = 220 \times I_{p}$
$∴ I_{p} = \frac{2 \times 11000}{220} = 100 A$

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