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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` ohm connected across the secondary is drawing a current of `0.5A`. What is the primary voltage and current?

A

`50V,1A`

B

`10V,5A`

C

`25V, 4A`

D

`20 V, 2A`

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(s)=I_(s)R=0.5xx200=100` volts
`(V_(p))/(V_(s))=(n_(p))/(n_(s))=1/10` or `V_(s)=(V_(s))/10=100/10 V=10V`
Again `(I_(p))/(I_(s))=(n_(p))/(n_(s))=10` or `I_(p)=10 I_(s)=10xx0.5 A=5A`
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