A bar of length 0.7 m slides along metal rails at a speed of 1 m/s. T – McqOptions

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1.	A bar of length 0.7 m slides along metal rails at a speed of 1 m/s. The bar and rails are in a magnetic field of 20 T, pointing out into the page. Calculate the motional emf.
A.	0.7 V
B.	7 V
C.	14 V
D.	1.4 V
Answer» D. 1.4 V

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