Two long straight parallel conductors 10 cm apart, carry equal currents of magnitude 3A in the same direction. Then the magnetic induction at a point midway between then is

Options

A. `2xx10^(-5)T`
B. `3xx10^(-5)T`
C. zero
D. `4xx10^(-5)T`

Answer

C

Explanation

At the mid-point of two conductors, the magnetic induction `B_(1)=B_(2)=B`.
Therefore, the net magentic induction due to two wire at the mid-point is `B_(R)=B_(1)-B_(2)=0`