Choose the correct options for the following questions.
The rate of change of area is expressed in:
Difficulty: Easy
A:
$m^{2}s^{-1}$
B:
$ms^{-2}$
C:
$m^{2}s^{-2}$
D:
$ms^{-1}$
A loop of wire is placed in a uniform magnetic field that is perpendicular to the plane of the loop. The electromotive force is induced in the loop when its area:
Difficulty: Easy
A:
Shrinks at constant rate
B:
Expands at constant rate
C:
Neither expands nor shrinks
D:
Either shrinks or expands
An emf of 5V is induced in a coil of 100 turns in 0.02 sec during which time a change of flux takes place by some process. The change of flux is:
Difficulty: Easy
A:
$10^{-3} Wb$
B:
$10^{-2} Wb$
C:
$10^{-5} Wb$
D:
$10^{6} Wb$
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