A bar of length 0.15 m slides along metal rails at a speed of 5 m/s. T – McqOptions

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1.	A bar of length 0.15 m slides along metal rails at a speed of 5 m/s. The bar and rails are in a magnetic field of 40 T, pointing out into the page. The resistance of two resistors in parallel is both 20 , and the resistance of the bar is 5 . What is the current in the bar?
A.	1 A
B.	2 A
C.	3 A
D.	5 A
Answer» C. 3 A

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