As shown in the figure, two solenoids are in line. The switch S, initially closed, is suddenly opened. Just after opening S, 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, two solenoids are in line. The switch S, initially closed, is suddenly opened. Just after opening S, 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, two solenoids are in line. The switch S, initially closed, is suddenly opened. Just after opening S, 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, Two Solenoids Are in Line