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A step-up transformer operates on a 230V...

A step-up transformer operates on a 230V line and supplies 2A to a load. The ratio of primary and secondary windings is 1 : 25, then the current in primary is ....

A

15 A

B

25 A

C

50 A

D

12.5 A

Text Solution

Verified by Experts

The correct Answer is:
C
For an ideal transformer,
`N_2/N_1=I_1/I_2`
`therefore I_1=I_2xxN_2/N_1`
`therefore I_1=2xx25/1`
`therefore I_1`= 50 A
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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