As shown in the figure, a straight wire carries a steady current $I$. A metal bar is in contact with a pair of rails and is in upward motion with velocity of magnitude $v$. The polarity of the induced emf in terminals $X$ and $Y$ is

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

Question

As shown in the figure, a straight wire carries a steady current

I

. A metal bar is in contact with a pair of rails and is in upward motion with velocity of magnitude

v

. The polarity of the induced emf in terminals

X

and

Y

is

As shown in the figure, a straight wire carries a steady current I . A metal bar is in contact with a pair of rails and is in upward motion with velocity of magnitude v . The polarity of the induced emf in terminals X and Y is A) Y is positive and X is negative. B) X and Y are at the same potential. C) X is positive and Y is negative.

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

Quizplus · Accepted Answer

The Answer of As shown in the figure, a straight wire carries a steady current $I$. A metal bar is in contact with a pair of rails and is in upward motion with velocity of magnitude $v$. The polarity of the induced emf in terminals $X$ and $Y$ is

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

As Shown in the Figure, a Straight Wire Carries a Steady