According to Faraday\'s Law when will the measured emf induced in the coil be po

Question

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) When the south pole of the magnet moves part way into the coil to the left _____ The magnet is part way into the coil and its south pole is pulled out to the right _____ When the north pole of the magnet moves part way into the coil to the left _____ The magnet is part way in the coil and its north pole is pulled out to the right _____

Explanation / Answer

if the north pole moves towards the coil the flux in the coil will increase , to oppose this change the emf produced in the coil will be in the opposite direction i.e negative

Similarly if the north pole moves away from the coil , the flux in the coil decreases , to oppose this change the emf produced will be in the opposite direction i.e positive

if the south pole moves towards the coil the flux in the coil will decreases , to oppose this change the emf produced in the coil will be in the opposite direction i.e positive

Similarly if the south pole moves away from the coil , the flux in the coil increase , to oppose this change the emf produced will be in the opposite direction i.e negative

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