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In a step up transformer, the turn ratio...

In a step up transformer, the turn ratio is 1:10. A resistance of `200 Omega` connected across the secondary draws a current of 0.5 A. What is the primary voltage?

A

5 V

B

10 V

C

20 V

D

2.5 V

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(s) = R xx I_(s) = 200 xx 0.5 = 100 V`
`:. (V_p)/(V_s) = (n_p)/(n_s) :. V_(p) = 100 xx 1/10 = 10 V`.
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