As shown in the figure, a metal bar is in contact with a pair of metal parallel rails. A steady uniform magnetic field $B$, perpendicular to the plane of the rails and pointing outward from the page, is present. The bar is in downward motion with velocity of magnitude $v$. The direction of the induced current through the resistor $R$ is

A) from $a$ to $b$.
B) from $b$ to $a$.
C) No current is induced.

Question

As shown in the figure, a metal bar is in contact with a pair of metal parallel rails. A steady uniform magnetic field

B

, perpendicular to the plane of the rails and pointing outward from the page, is present. The bar is in downward motion with velocity of magnitude

v

. The direction of the induced current through the resistor

R

is

As shown in the figure, a metal bar is in contact with a pair of metal parallel rails. A steady uniform magnetic field B , perpendicular to the plane of the rails and pointing outward from the page, is present. The bar is in downward motion with velocity of magnitude v . The direction of the induced current through the resistor R is A) from a to b . B) from b to a . C) No current is induced.

A) from $a$ to $b$. 
B) from $b$ to $a$. 
C) No current is induced.

Quizplus · Accepted Answer

The Answer of As shown in the figure, a metal bar is in contact with a pair of metal parallel rails. A steady uniform magnetic field $B$, perpendicular to the plane of the rails and pointing outward from the page, is present. The bar is in downward motion with velocity of magnitude $v$. The direction of the induced current through the resistor $R$ is

A) from $a$ to $b$. 
B) from $b$ to $a$. 
C) No current is induced.

As Shown in the Figure, a Metal Bar Is in Contact