A conducting rod is moving through a magnetic field, as in the drawing. The magnetic field strength is 0.65 T, and the speed of the rod is 4.8 m/s. Suddenly, the field strength decreases to 0.48 T. To what value must the speed v of the rod be adjusted to reestablish the emf induced between the ends of the rod at its initial value
Answers: 3
speed of the rod initially, 
final magnetic field, 
length of the rod
final velocity of the rod so that emf remains constant
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A conducting rod is moving through a magnetic field, as in the drawing. The magnetic field strength...
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