10. [2pt] Two bar magnets A and B are released simultaneously from the same heig

Question

10. [2pt]
Two bar magnets A and B are released simultaneously from the same height with their south poles pointing toward the ground. Magnet A is simply dropped through the air, while magnet B passes through a coil of wire with many turns during its fall.
Which of the following statements are true? (Give ALL correct answers, i.e., B, AC, BCD...)

A) An induced current in the wire creates a magnetic field that pushes magnet B toward the ground.
B) The induced current flips direction as magnet B falls through the wire.
C) Magnet A does not create any electric field as it falls.
D) Magnet B induces an EMF in the coiled wire as it falls through it.
E) Magnet A arrives on the ground before magnet B.
F) Magnet B does not create any electric field as it falls.

Explanation / Answer

A). statement is false...because magnet motion is resisted by magnetic field due to induced emf.

B) false...because rate of change of flux and direction of opposing of motion of magnet remains same as verified by lenz's law

C) true.

D)true

E ) true....because motion of B is resisted by induced emf and hence magnetic field generated by resulting current in the oil

F) TRUE

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