is it negative, positive, or zero ? b) What happens to the absolute value of the

Question

is it negative, positive, or zero ?

b) What happens to the absolute value of the rate of change of the flux in the area subtended by the coil, if the magnet is moved more rapidly through the coil?

does it increase, decrease, or stay the same ?

c) According to Faraday’s Law what happens to the absolute value of the maximum value of the induced emf if the magnet is moved more rapidly through the coil?

does it increase, decrease, or stay the same ?

d) According to Faraday’s Law when will the measured emf induced in the coil be positive? When will it be negative? (Refer to Figure 2 and use + and ­– signs as appropriate)

Explanation / Answer

a)

as the north pole of magnet is moved towards left , through the coil , the magnetic flux increases hence the change in flux would be positive

b)

as the magnet is moved more rapidly , the change takes place in smaller amount of time and hence rate of change of flux increases

c)

increases

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