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 ν. The polarity of the induced emf in terminals X and Y is
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 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 ν. The polarity of the induced emf in terminals X and Y is 
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 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 ν. The polarity of the induced emf in terminals X and Y is 
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 Straight Wire Carries a Steady