Electric Circuit and Its Components

Electricity of Class 10

All electrical appliances like lamps, heaters and air-conditioners, which work on electricity, are called Loads.

To pass electric current through any 'Load', it has to be connected to a source of electric power through wires called conductors.

A source of electric power (battery), loads and switches connected together through wires form an Electric Circuit.

There are many components or elements of an electric circuit:

Connecting wires: They are also called conductors.

Electricity and its components

Resistors, Rheostats: It consists of wires made of Manganin and constantan alloys. Resistors provide fixed resistance whereas rheostats provide variable resistance.

Electricity and its components

Or

Resistor Rheostat

Battery: It is a combination of two or more cells.

Electricity and its components

Galvanometer: It is a device used for detecting flow of current.

Electricity and its components

Ammeter: Also called as ampere-meter, it is used to measure current. It is always placed in series with the circuit.

Electricity and its components

Voltmeter: Used for measuring potential difference. It is always connected in parallel across the circuit.

Electricity and its components

Closed electric circuit: In this, key is closed and current flows in the circuit continuously.

Electricity and its components

Open electric circuit: In this, key is open and no current flows in the circuit.

Electricity and its components

Wires crossing without joining

Electricity and its components

An electric cell

Electricity and its components

Electric bulb

Electricity and its components

 

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