2.
The magnetic effect of electric current was discovered by
3.
A carbon microphone is best used in a
4.
Which of the following figures represents the magnetic lines of force due to an isolated north pole?
5.
An electric current predominantly produces overline field around it.
6.
Electromagnets are used in
9.
A coil carrying current behaves as a/an
10.
Which of the following figures represent the magnetic lines of force due to an isolated south pole
