Home
Class 12
PHYSICS
PQ and RS are long parallel conductors s...

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

A

3B

B

`B/2`

C

B

D

2B.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

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

Two parallel wires carrying current I and 2I have magnetic field B at the mid point between them. If the current 2I is switched off, the magnetic field at that point will be :

An electron is moving in a circle of radius r in a uniform magnetic field B. Suddenly the field is reduced to B/2 . The radius of the circular path now becomes.

Two long conductors separated by a distance d of carry currents I_2 and S_2 in the same direction. They exert a force f on each other. Now current in one of them is increased to two turns and its direction is reversed. The distance is also increased to 3d . The new value of the force between them is

Two identical circular coils are separated by a distance twice the radius of either of the coil. If n = 2, r = 0.08 m, i = 3A, then calculate the resultant magnetic field at the mid point of the line joining their centres, for currents in the same sense and opposite sense in the two circular coils.

Two long parallel wires P and Q are held perpendicular to the plane of the paper with distance of 5m between them. If P and Q carry current of 2.5 A and 5A respectively in the same direction, then the magnetic field at a point halfway between the wires is