Question text
30 A magnet oscillates vertically above a coil of wire. spring S magnet P movement N Q of magnet R coil of wire As the lower end of the magnet oscillates between P and R, a varying e.m.f. is induced across the coil. When this e.m.f. is 0 V, where could the lower end of the magnet be? A at R only B at Q only C at P or at R D at P or at Q
30 A magnet oscillates vertically above a coil of wire.
spring
S magnet
P
movement N
Q
of magnet
R
coil of
wire
As the lower end of the magnet oscillates between P and R, a varying e.m.f. is induced across the
coil.
When this e.m.f. is 0 V, where could the lower end of the magnet be?
A at R only
B at Q only
C at P or at R
D at P or at Q
Select your answer: