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In a transformer, number of turns in the...

In a transformer, number of turns in the primary coil are 140 and that in the secondry coil are 280. If current i primary coil is 4A, then that in the secondary coil is

A

`4 A `

B

`2 A`

C

`6 A `

D

`10 A`

Text Solution

Verified by Experts

Given `: i _(p) = 4 A, " " N_(P) = 140,`
`N _(S) = 280`
From the formula
`(i _(P))/( i _(s))= ( N _(S))/( N _(P) ) or (4)/( i _(S)) = ( 280)/(140)`
SO, `i _(S) = 2 A`
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