Magnetic field due to currentHard
Question
Wherever a magnet is moved either towards or away from a conducting coil an emf is induced, the magnitude of which is independent of
Options
A.the strength of the magnetic field
B.the speed with speed with which the magnet is moved
C.the number of turns in the coil
D.the resistance of the coil
Solution
The magnitude of the induced emf in a coil when a magnet is moved either towards or away from it is given by
e = - N
or e = - N 
From above expression, it is clear that e depends on
(i) the strength of the field (B)
(ii) the number of turns in the coil (N)
(iii) the area of ceoss-section of the coil (A)and velocity(v)with which the magnet is moved.
e = - N
or e = - N From above expression, it is clear that e depends on
(i) the strength of the field (B)
(ii) the number of turns in the coil (N)
(iii) the area of ceoss-section of the coil (A)and velocity(v)with which the magnet is moved.
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