As shown in the figure, a metal bar is in contact with a pair of parallel rails. A steady, uniform, magnetic field $B$ is present directed to the right. The bar is moving upward with velocity of magnitude $v$. What is the polarity of the induced emf in terminals $X$ and $Y$ ?

A) $Y$ is positive and $X$ is negative.
B) $X$ is positive and $Y$ is negative.
C) $X$ and $Y$ are at the same potential.

Question

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

B

is present directed to the right. The bar is moving upward with velocity of magnitude

v

. What is the polarity of the induced emf in terminals

X

and

Y

?

As shown in the figure, a metal bar is in contact with a pair of parallel rails. A steady, uniform, magnetic field B is present directed to the right. The bar is moving upward with velocity of magnitude v . What is the polarity of the induced emf in terminals X and Y ? A) Y is positive and X is negative. B) X is positive and Y is negative. C) X and Y are at the same potential.

A) $Y$ is positive and $X$ is negative. 
B) $X$ is positive and $Y$ is negative. 
C) $X$ and $Y$ are at the same potential.

Quizplus · Accepted Answer

The Answer of As shown in the figure, a metal bar is in contact with a pair of parallel rails. A steady, uniform, magnetic field $B$ is present directed to the right. The bar is moving upward with velocity of magnitude $v$. What is the polarity of the induced emf in terminals $X$ and $Y$ ?

A) $Y$ is positive and $X$ is negative. 
B) $X$ is positive and $Y$ is negative. 
C) $X$ and $Y$ are at the same potential.

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