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A rod moves with a speed of 2.1 m/s on rails 50cm apart in a magnetic...

A rod moves with a speed of 2.1 m/s on rails 50cm apart in a magnetic field of .45T the whole circuit has a resistance of 20Ω.

a.) how fast is the area changing as the rod moves?

b.) the induced emf

c.) the magnitude and direction of the current in the circuit?

d.) the external force needed to keep the rod's velocity constant at that instant

e.) find the power loss in the circuit at that instant

c

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