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Two parallel very long straight wires ca...

Two parallel very long straight wires carrying current of 5A each are kept at a separation of 1 m. If the currents are in the same direction, the force per unit length between them is ______ N/m. `(mu_(0)=4pixx10^(-7)SI)`

A

`5 xx 10^(-5)` attractive

B

`5 xx 10^(-6)` attractive

C

`5 xx 10^(-5)` repulsive

D

`5 xx 10^(-6)` repulsive

Text Solution

Verified by Experts

The correct Answer is:
B
`(F)/(l)= (mu_(0)I_(1)I_(2))/(2pid)= 2 xx 10^(-7) xx (5 xx 5)/(1)= 5 xx 10^(-6)`, attractive
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