Question

20. Read the following and answer any four questions from 20 (i) to 20 (v).
Two coils of insulated copper wire are wound over a non-conducting cylinder as shown. Coil 1 has
larger number of turns.
Coll 1
Coll 2
The phenomena responsible for the above observation is:
(a) Electromagnetic induction
(b) Magnetism
(c) Overloading
(d) None of these
(2) Which rule is involved to determine the direction of current produced in the phenomena?
(a) Lenz's law
(b) Fleming's left hand rule
(c) Fleming's right hand rule
(d) None of these
(II) The two coils used in this experiment are:
(a) Coil 1 - primary coil
(6) Coil 1 - secondary coil
Coil 2 - secondary coil
Coil 2 - primary coil
(c) Coil 1 - first coil
(6) None of these
Coil 2 - second coil
(iv) When current is continuously passed through coil - 1.
(a) Deflection is observed in the galvanometer
(b) No deflection is observed in the galvanometer
(c) The galvanometer needle deflects in opposite direction
(d) None of these
(v) The condition for the phenomenon of electromagnetic induction is that there must be a relative
motion between
(a) the galvanometer and magnet
(b) the coil of wire and galvanometer
(c) the coil of wire and magnet
(d) the magnet and galvanometer​

Answer 1

1. (a)
2.(c)
4.(b)
5.(c)