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A power transformer is used to step up a...

A power transformer is used to step up an alternating e.m.f. of `220 V` to `11kv` to trannsmit `4.4 kW` of power. If the primary coil has `1000` turns, what is the current rating of the secondary?(Assume `100%` efficiency for the transformer)

A

4A

B

0.4A

C

0.04A

D

0.2A

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(s)=Ps//Vs Rightarrow "Is"=(4.4xx10^(3))/(11xx10^(3))=0.4A`
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