Question

Two circular coils ‘A’ and ‘B’ are kept close to each other, of which coil ‘A’ carries direct current. What will be observed in galvanometer connected to the the coil ‘B’
i) If the current in the coil ‘A’ is changed?
ii) If both the coil are moved with same speed in same direction? Give the reason.
iii) What is the principle behind the working of generator? On what factor the strength of induced current produced by a generator depends on

Answer 1

i) Deflection in the galvanometer

ii) No delfection as if both are mived with same speed the net motion will cancel out to be zero and there will be no motion.

iii) EMI(Electromagnetic Induction)

It depends on the no. of turns in a coil and the strength of magnetic field