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