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Question

In a transformer the number of turns of primary coil and secondary coil are 2.5 and 2 respectively and 140 V is applied on primary coil, then find the ratio of current in primary and secondary coils :

A
Ip:Is=4:5
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B
Ip:Is=5:4
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C
Ip:Is=4:3
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D
Ip:Is=3:5
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