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Chapter: 07. Electricity

⁠
A bulb changes electrical energy into _ _ _ _ _ _ _ _ _ _ _ _ _ _ energy.
Light
The centre of an atom is called the _ _ _ _ _ _ _ _ _ _ _ _ _ _ which consists of protons and neutrons.
Nucleus
The SI unit of electric charge is the _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Coulomb
The amount of charge flowing per unit time is known as _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Electric current
Potential difference is measured in the SI unit called _ _ _ _ _ _ _ _ _ _ _ _ _ _, which is named after Alessandro Volta.
Volt
By convention, the direction of flow of electric current is taken to be from the _ _ _ _ _ _ _ _ _ _ _ _ _ _ terminal of the battery to the negative terminal.
Positive
A chemical cell that cannot be recharged after use is known as a _ _ _ _ _ _ _ _ _ _ _ _ _ _ cell.
Primary
The dry cell was developed in 1887 by _ _ _ _ _ _ _ _ _ _ _ _ _ _ of Japan.
Yai Sakizo
In a dry cell, the zinc container acts as the negative electrode, which is also known as the _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Cathode
A number of primary cells connected in series forms a _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Battery
An electric generator or dynamo is a device that converts mechanical energy into _ _ _ _ _ _ _ _ _ _ _ _ _ _ energy.
Electrical
A solar panel is formed by connecting a large number of _ _ _ _ _ _ _ _ _ _ _ _ _ _ together.
Solar cells
A circuit is said to be _ _ _ _ _ _ _ _ _ _ _ _ _ _ when the electrical contact at any point is broken and no current flows.
Open
The measure of the opposition to current flow in an electrical circuit is known as _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Resistance
Substances like cotton, rubber, glass, and plastic that do not allow electric current to flow through them easily are called _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Insulators
In household wiring systems, all the appliances are connected in _ _ _ _ _ _ _ _ _ _ _ _ _ _ so that they can be operated independently.
Parallel
A safety device containing a wire that melts and breaks the electric circuit when current exceeds the permissible value is a _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Fuse
In 1866, the French scientist Georges Leclanche invented the _ _ _ _ _ _ _ _ _ _ _ _ _ _ cell.
Leclanche
Gallery
 
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