3(20) a) In the figure below, what is the direction of the flux experienced by t

Question

3(20) a) In the figure below, what is the direction of the flux experienced by the loop of coil? (5) b) If the current I is increasing, what is the direction of the induced current in the loop of wire? Explain. (5) c) If the loop of wire were free to rotate, would it? Explain. (5) d) If the loop of wire were free to move up or down, would it? Explain, and state which direction if yes. (5) e) (Bonus ? not worth very many points) What is the mutual inductance of this system? (indicate what lengths you use) (2)

Explanation / Answer

PART A)

Into the page.

PART B)

According to Lenz's law:

"If an induced current flows, its direction is always such that it will oppose the change which produced it."

so the induced current is counter-clockwise.

PART C)

It wouldnt, cuz net torque would be zero.

PART D)

Yes, upwards. The force on the top is greater than force on bottom.

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