A conducting rod of length l is moving in a transverse magnetic field of strength B with velocity v . The resistance of the rod is R . The current in the rod is

Question

A conducting rod of length l is moving in a transverse magnetic field of strength B with velocity v . The resistance of the rod is R . The current in the rod is (A) (B l v/R) (B) Blv (C) Zero (D) (B2 v2 l2/R)

Tardigrade Admin · Accepted Answer

Since the rod is moving in transverse magnetic field, so it will cut no flux passing through the field and hence no induced emf is produced. So, no current will flow through the rod.

Q. A conducting rod of length $l$ is moving in a transverse magnetic field of strength $B$ with velocity $v$ . The resistance of the rod is $R$ . The current in the rod is

$\frac{Bl v}{R}$

$Bl v$

Zero

$\frac{B ^{2} v ^{2} l ^{2}}{R}$

Since the rod is moving in transverse magnetic field, so it will cut no flux passing through the field and hence no induced emf is produced. So, no current will flow through the rod.

Q. A conducting rod of length l is moving in a transverse magnetic field of strength B with velocity v . The resistance of the rod is R . The current in the rod is

RBlv​

Blv

Zero

RB2v2l2​

Since the rod is moving in transverse magnetic field, so it will cut no flux passing through the field and hence no induced emf is produced. So, no current will flow through the rod.

Q. A conducting rod of length $l$ is moving in a transverse magnetic field of strength $B$ with velocity $v$ . The resistance of the rod is $R$ . The current in the rod is

$\frac{Bl v}{R}$

$Bl v$

$\frac{B ^{2} v ^{2} l ^{2}}{R}$