Question

The device used for producing electric current is called a:
A.) Generator
B.) Galvanometer
C.) Ammeter
D.) Motor

Answer 1

Hint: First of all current is produced by the process of electromagnetic induction then it can be measured using some device and then it is consumed i.e. Electrical energy is converted into other forms of energy like mechanical energy or heat.

Complete step-by-step answer:

GENERATORS- These are the devices which convert one form of energy into electrical energy by the process of electromagnetic induction (which says that voltage is induced in a conductor if there is relative motion in between the conductor and magnetic field).

Thus if this induced voltage has a closed path then current starts flowing due to potential difference between.

Also this current can be measured by ammeter, galvanometer (if current magnitude is very less). And this current is further used for doing useful work by using different loads which are mostly a motor load like fans, mills etc.

So motors are used for consumption of current and production of current can be only by generator.

Hence the correct option is “A”.

Note: There are two types of generators AC current generators and DC current generators. The AC generators are further of two types: Induction generators and Synchronous generators. The synchronous generators are widely used for the production of AC current in the power plant because it provides constant speed and fluctuations in the frequency are low. These all generators are mechanically rotated by using various energies like potential energy of water kept in the dam, heat energy of fuels like diesel or coal, wind energy and now even nuclear energy.