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entropy15
entropy15 is offline
#8
Dec27-12, 11:47 AM
P: 37
Quote Quote by Drakkith View Post
I'm with you, as it looks to me like 2t. Anyone else know?
Hi Drakkith,

That is fine. But suppose say the magnet starts moving at instant t=t1.
So the current would be induced in the coil at t=t1+t and the magnet will start experiencing
resistance only at t=t1+2t.

But what about the total energy of the system at time t=t1+t. At this time we have a moving magnet which has not experienced any resistance and has not lost any energy and also the current induced in the coil.

Should not the whole process act as a way of energy transfer between the motion of magnet and the coil? should not the moving magnet lose energy as soon as the current is induced in the coil.