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 ν. What is the polarity of the induced emf in terminals X and Y?
A) X and Y are at the same potential.
B) X is positive and Y is negative.
C) Y is positive and X is negative.

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 ν. What is the polarity of the induced emf in terminals X and Y? 
A) X and Y are at the same potential. 
B) X is positive and Y is negative. 
C) Y is positive and X is negative.

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 ν. What is the polarity of the induced emf in terminals X and Y? 
A) X and Y are at the same potential. 
B) X is positive and Y is negative. 
C) Y is positive and X is negative.

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