2. [1pt] A square loop of wire with a small resistance is moved with constant sp

Question

2. [1pt] A square loop of wire with a small resistance is moved with constant speed from a field free region into a region of uniform B field (B is constant in time) and then back into a field free region to the right. ???????? ???????? For each statement select T True, F False. (If the first is T and the rest F, enter TFFFF.) A) When leaving the field the coil experiences a magnetic force to the right B) Upon entering the field, a counterclockwise current flows in the loop pon leaving the field, a counterclockwise current flows in the loop D) When entering the field the coil experiences a magnetic force to the left. E) While the loop is entirely in the field, the emf in the loop is zero Answer: Submit All Answers Last Answer: fffft Not yet correct, ONE try left!!

Explanation / Answer

(A)

False

Infact, when leaving the field the coil experiences a magneic force to the left.

(B)

True
Upon entering the field, the flux enclosed by the loop increases which inturn induces a current in such a way to oppose any increase in flux. so a current flows in counterclockwise direction.

(C)

False

Upon leaving the field, the flux enclosed by the loop decreases which inturn induces a current in such a way to oppose any decrease in flux. so a current flows in clockwise direction.

(D)

True

(E)

True

Snce the flux enclosed by the loop is not changing while the it is entirely in the field, the induced emf is zero.

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