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Two parallel conductors of length 10 m c...

Two parallel conductors of length 10 m carrying same current separated by 20 cm in air experiences a force of `0.9 N`, then the current in each conductor is

A

`30 A`

B

`300 nA`

C

`300 sqrt2 A`

D

`300 A`

Text Solution

Verified by Experts

The correct Answer is:
d
`F = (mu_(0)I_(1)I_(2)l)/(2 pi a) rArr (4 pi xx 10^(-7) xx I^(2) xx 10)/(2 pi xx 0.2)`
` = 0.9`
` I^(2) = 9 xx 10^(4) `
` = 300 A`
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