Which of the following galvanometer has very high sensitivity?
Pivoted type galvanometer
Suspended type galvanometer
Moving coil galvanometer
All the above.
Which of the following is used to increase or decrease the amplitude of alternating current?
Transformer
Generator
Electromagnets
Galvanometer
Which of the following is used to measure the current in a circuit?
Ammeter
Voltmeter
Rheostat
Which of the following converts mechanical energy to electrical energy?
Electric bell
Electric heater
Electric iron
A d.c motor converts
Electrical energy into mechanical energy
Mechanical energy into electrical energy
Electrical energy into heat energy
Mechanical energy into heat energy
What material is use for making the armature of an electric bell?
Soft iron
Silver
An alloy of iron and steel
Copper
Which of the following is most commonly used galvanometer?
All the above
When a low resistance wire is connected in parellel to the coil of galvanometer, it works as
Electromagnet
The materials which are attracted by magnets are called
Ferromagnets
Paramagnets
Bar magnets
Which of the following gives the presence and direction of flow of current in any circuit?
