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The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an A.C. 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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a

240 V, 5 A

b

240 V, 10 A

c

60 V, 20 A

d

120 V, 20 A

answer is A.

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Detailed Solution

ESEp=nsnp or Es=Ep×nsnp ∴Es=120×200100=240VIsIp=npns or Is=Ipnpns∴Is=10×100200=5 amp

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