A circular coil of 50 turns and radius is placed perpendicular to a uniform magnetic…
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Magnetism and Electromagnetism · Magnetism and Electromagnetism
Problem
A circular coil of 50 turns and radius 10cm is placed perpendicular to a uniform magnetic field that is directed into the page. The field strength is decreased uniformly from 0.50T to 0.20T in 0.10s. Viewed from the side of the incoming field lines, which statement regarding the induced current is correct?
(a) It is anticlockwise.
(b) No current is induced because the field, though changing, remains perpendicular to the coil.
(c) It is clockwise.
(d) Direction cannot be predicted without knowing the coil's resistance.