Source of Electric Current


 
 
Concept Explanation
 

Source of Electric Current

A device that can be used to produce an electric current is called a source of electric current. Common sources of electric current are cells and batteries (collection of cells) which comes in various shapes and sizes. A very useful kind of cell which we use very often is dry cell, due to a chemical reaction that takes place in cells and batteries, electric current is produced.

The main source form where we get electric current are:

1. The dry cell and battery

Dry Cell

Battery

2. The mains provided by the electricity department.

3. Electric generator, and

4. A solar cell.

Sample Questions
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Question : 1

Which of the following are correct :

(a) Cell and battery are the sources of electricity.

(b) Electric generator can produce electricity.

(c) Solar cells are the good source of electricity.

Right Option : D
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Explanation
Question : 2

Which of the following are correct :

(a) Cell and battery are the sources of electricity.

(b) Solar cells are the bad source of electricity.

Right Option : A
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Explanation
Question : 3

Which of the following are correct :

(a) Battery is the bad sources of electricity.

(b) Dry cell is used in devices like clock, remote, etc.

(c) Solar cells are the bad source of electricity.

Right Option : B
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Explanation
 
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