| Two long straight wires are set parallel to each other. |
| Each carries a current i in the same direction and the separation between them is 2r. The instensity of the magnetic field midway between them is |
 |
A) \[{{\mu }_{0}}i/r\]
B) \[4{{\mu }_{0}}i/r\]
C) zero
D) \[{{\mu }_{0}}i/4r\]
Correct Answer: C
Solution :
\[B=\frac{{{\mu }_{0}}}{2\pi }.\frac{1}{r}-\frac{{{\mu }_{0}}}{2\pi }.\frac{i}{r}=0\]
You need to login to perform this action.
You will be redirected in
3 sec
