Question
PQ and RS are long parallel conductors separated by a certain distance. M is the midpoint between them (see the figure). The net magnetic field at M is $B$. Now, the current of 2A is switched off. The field at M now becomes …………
PQ and RS are long parallel conductors separated by a certain distance. M is the midpoint between them (see the figure). The net magnetic field at M is $B$. Now, the current of 2A is switched off. The field at M now becomes …………