A rectangular coil of copper wire is rotated in a magnetic field. The direction of the induced current changes once in each |
|||
(a) |
revolution |
(b) |
two revolutions |
(c) |
half revolution |
(d) |
one fourth of a revolution |
A rectangular coil of copper wire is rotated in a magnetic field. The direction of the induced current changes once in each |
|||
(a) |
revolution |
(b) |
two revolutions |
(c) |
half revolution |
(d) |
one fourth of a revolution |