Question

insulated copper wire in wounder around the plastic cylinder and connected to galvanometer. what happen why .
a. bar magnet pushed in
b. bar magnet keep out
c. bar magnet pull
d. number of terms increases
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Answer 1

a.The metre turns towards left

b.The metre doesnot change

c.The metre turns towards right

d.The metre turns more fast

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Answer 2

a) Current is induced in the coil, as changing(increasing) magnetic field produces electric current. Galvanometer arrow turns.

c) Current is induced in reverse direction, as changing(decreasing) magnetic field also produces electric current. Galvanometer arrow turns in opposite direction...

b) No current will be induced in the coil as magnetic field isn't changing. Galvanometer arrow doesn't turn..

d) Increasing number of turns will increase the induced e.m.f. Galvanometer arrow will turn more....