32 . A rectangular loop of wire has dimensions a × b and includes a resistor R . This loop is pulled
with speed v from a region of no magnetic field into a uniform magnetic field B pointing through the
loop, as shown above. What is the magnitude and direction of the current through the resistor?
(A) Bav /R , left-to-right
(B) Bbv /R , left-to-right
(C) Bav /R , right-to-left
(D) Bbv /R , right-to-left
(E) Bba /R , right-to-left33 . A conducting wire sits on smooth metal rails, as shown above. A variable magnetic field points out
of the page. The strength of this magnetic field is increased linearly from zero. Immediately after the
field starts to increase, what will be the direction of the current in the wire and the direction of the
wire’s motion?