Hint: The magnetic field nearthe north pole of the bar magnet shown in the figur

Question

Hint: The magnetic field nearthe north pole of the bar magnet shown in the figure above pointstowards the left. It is strongest near the pole.
The flux of this field through the coil increases as the magnetapproaches the coil. This change in flux will induce an emfand a current will start flowing. The magnetic field producedby this current must oppose the flux changes that producedit. It must point towards the right and must increase as themagnet approaches. The current therefore flows as indicatedby the arrow in the figure, the voltage measured across points Aand B is higher at B than at A and increasing.

Explanation / Answer

The given hint tells you the answer:   they want you toanswer      higher at B than at Aand increasing,   or answer A (just read the lastline of the hint). . Whoever wrote the hint does not really understand how thisworks though... the induced current is proportional to the rate ofchange of the magnetic flux. While the magnetic field gets strongeras the magnet approaches, the rate ofchange of the mag flux actually decreases. Thecorrect answer should be D, but you have to answer whatthey want you to answer.

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