Problem 3: (20 points) A rectangular conducting loop with a resistance of 4.0 [

Question

Problem 3: (20 points)

A rectangular conducting loop with a resistance of 4.0 [?] falls from a region where the magnetic field is 0.75 [T] directed out of the plane of the page into a region with no magnetic field. The loop has a mass of 30.0 [g].

(a) What is the direction of the EMF induced in the loop?

(b) What is the direction of the current induced in the loop?

(c) What is the direction of the magnetic force on the induced current in the loop?

(d) What is the terminal velocity for the loop?

(e) When falling at its terminal velocity, at what rate is electrical energy in the loop converted to heat?

Explanation / Answer

answer continuation.......the magnetic forces on oposite sides of the loop are equal in maginitude and acts in the oposite direction.Hence, the net magnetic force on the loop becomes zero. But due gravitaional force the loop velocity increases as it falls down. As its velocity increases air resistance force on the loop increses. At certain velocity(terminal spped) Gravitational force and air resistance both becomes same.The given data is insufficient to calculate terminal speed.

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