Home
Class 12
PHYSICS
Electric charge q is distributed uniform...

Electric charge `q` is distributed uniformly over a rod of length `l`. The rod is placed parallel to a long wire carrying a current `i`. The separation between the rod and the wire is a. The force needed to move the rod along its length with a uniform velocity `v` is

A

`(mu_0iqv)/(2pia)`

B

`(mu_0qv)/(3pia^2)`

C

`(mu_0q^2v)/(2pia^2)`

D

`(mu_0ivq)/(3pia)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A rod of length l is placed perpendicular to a long wire carrying current i . The rod is moved parallel to the wire with a velocity v . Find the emf induced in the rod, if its nearest end is at a distance a from the wire.

A rod of length l is placed perpendicular to a long wire carrying current i . The rod is moved parallel to the wire with a velocity v . Find the emf induced in the rod, if its nearest end is at a distance a from the wire.

A rod of length l is kept parallel to a long wire carrying constant current i . It is moving away from the wire with a velocity v . Find the emf induced in the wire when its distance from the long wire is x .

A rod of length l is kept parallel to a long wire carrying constant current i . It is moving away from the wire with a velocity v. Find the emf induced in the wire when its distance in the wire when its distance from the long wire is x .

A thin rod, carrying current i_2 is placed near a long straight wire carrying current i_1 in the plane of rod as shown in figure. The motion of rod is

Charge Q is uniformly distributed on a dielectric rod AB of length 2l . The potential at P shown in the figure is equal to

A rod CD of length b carrying a current l, is placed in a magnetic field due to a thin log wire AB carrying currrent I as shown in fig. Then find the net force experienced by the wire

A uniform cylindrical rod of length L and cross-sectional area by forces as shown in figure. The elongation produced in the rod is

A copper rod moves with a constant angular velocity omega about a long straight wire carrying a current I. If the ends of the rod from the wire are at distances a and b, then the e.m.f induced in the rod is

A metal rod of length l cuts across a uniform magnetic field B with a velocity v. If the resistance of the circuit of which the rod forms a part is r, then the force required to move the rod is