1.
Which of the following figures represent the magnetic lines of force due to an isolated south pole
2.
An electric current predominantly produces overline field around it.
5.
Electromagnets are used in
6.
Which of the following figures represents the magnetic lines of force due to an isolated north pole?
7.
A coil carrying current behaves as a/an
9.
The magnetic effect of electric current was discovered by
10.
A carbon microphone is best used in a
