Electricity and Circuits
Category : 6th Class
Electricity is a form of energy known as electrical energy. We can convert electrical energy into various other forms of energy, easily.
The path through which electric current can flow is known as electric circuit. A simple electric circuit. A simple electric circuit is made up of a bulb, wire and a n electric cell. An electric cell has two ends positive terminal and a negative terminal. A wire is connected from positive terminal to negative terminal of the cell and the bulb is connected to the wire so that the current can flow through bulb.
Closed Circuit: If there is no gap in a electric circuit, the circuit is known as closed or complete circuit
Open Circuit: If there is gap in a electric circuit, the circuit is known as open circuit.
Conductors and Insulators
The substances which allow electric current to pass through them are called conductors. Metals like cooper, gold, silver, aluminium, iron, etc. are good conductors of electricity.
The substances which do not allow electric current to pass through them are called insulators. For example wood, plastic, paper, rubber are insulators.
An electric cell is a device which can generate electric current in a closed circuit. It is small, easily portable and is very useful for us. There are a number of machines like watch, calculators, toys, cars etc. in which electrical cell is used to produce electrical current. Dry cell, button cell, solar cells are the examples of electric cell.
A dry cell is a cylindrical device in which a number of chemicals is stored. It has a metal cap on one side called positive terminal and a metal sheet at other side called negative terminal. It produce electric current from the chemical stored inside it.
An electric bulb is a device which produces light using electrical energy. It consists of a glass bulb fixed on a metal case. The thin wire fixed between the two thick wire is called filament and an inert gas is filled inside the glass bulb. When electric current passes through the filament, it emits light which makes the bulb glow.
An electric bulb is a device which produces light using electrical energy. It consists of a glass bulb fixed on a metal case. The thin wire fixed between the two thick wire is called filament and an inert gas is filled inside the glass bulb. When electrical current passes through the filament, the emits light which makes the bulb glow.
The path through which electricity can flow is known as;
(c) Electric circuit
(d) Electric fuse
(e) None of these
Which one of the following is a source of electricity?
(a) Copper wire
(b) Electric bulb
(c) Electric switch
(d) Dry cell
(e) None of these
Electricity is a form of energy.
Electricity flows through a path known as electric circuit.
Conductors allow current to pass through them.
Insulators do not allow current to pass through them.
Dry cell converts chemical energy into electrical energy.
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