Question

a) A magnet falls through a loop of wire with the southpole entering first. As the south pole approaches the loop, what isthe direction of the induced current in the loop (as veiwed fromabove, looking down on the magnet)?b) A magnet falls through a loop of wire with the southpole entering first. After it has fallen all the way through, sothat the north pole end is moving away from the loop, what is thedirection of the induced current in the loop (as veiwed from above,looking down on the magnet)?

Answer 1

Explained

Step-by-step explanation:

a) Len'z law state's that the direction of induced current is such that it always opposes the cause it produces.

So, from south pole field lines go away from the loop, so to increase the flux through loop the direction of current must be clockwise.

b)

When the north pole was leaving the loop, the direction of current must be counter clock wise in the loop