Question

Procedure: Take one of the coils and connect it to the galvanometer. Use the cylindrical magnet to generate a changing magnetic field around the coil and note the reading of the galvanometer as the field changes. Thrust the N pole of the magnet into the coil and note the effect on the galvanometer. When the needle has come to rest, withdraw the magnet as quickly as possible. Note the effect on the direction of current flow. Reverse the magnet and investigate the effect resulting from use of the S pole. SKETCH and EXPLAIN this experiment on the template, as instructed there.

III) Observe the effect of moving a magnetic pole into a coiled wire. For each of these scenarios (a North pole approaching, and a North pole retreating): Draw the B-field from the magnet, explain how Lenz's Law determines the direction of induced current in the coil, and draw the direction of that induced current.

roachin RetreatinaS

Question: With the galvanometer pointer at rest and the appropriate scale switch depressed, very slowly bring the magnet and coil together. What effect does this slow motion have on the amount of deflection?

Answer 1

i coil, pole of m Cai