-In the Figure,a Bar Is in Contact with a Pair

question 63

Multiple Choice

-In the figure,a bar is in contact with a pair of parallel rails.A steady,uniform,magnetic field B is present.The bar is in motion with velocity 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

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