ACTIVITY 2
1.
List down some applications of electromagnets
2. (a) What is solenoid?
(b) Indicate
the magnetic field lines due to a solenoid.
(c) What is the core material used in a solenoid to obtain an
electromagnet?
3.
(a) What
rule would you use to find the force acting on a current carrying conductor
placed in a magnetic field?
(b) Name any two devices that
work on this principle.
4.
Draw a labelled diagram of an electric bell and explain
its mode of action.
5.
How does telephone receiver work?
6.
Describe the structure of galvanometer.
7.
Give three ways in which the sensitivity of the moving coil
galvanometer could be increased
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