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The ratio of number of turns in primary ...

The ratio of number of turns in primary and secondary coil of a transformer is 1:20 the ratio of current in primary and secondary coils will be ....

A

`1:20`

B

`20:1`

C

`1:400`

D

`400:1`

Text Solution

Verified by Experts

The correct Answer is:
B
`I_2/I_1=N_1/N_2`
Now, `N_1/N_2=1/20`
`therefore I_1/I_2=N_2/N_1=20/1`
`therefore` Ratio of currents is 20 :1
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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