Electricity and its effects

A device used to measure the amount of electric current flowing through a circuit.

• Ammeter

• Voltmeter

• Resistor

• Battery

A combination of two or more cells is called

• A button cell

• A battery

• An electric cell

• Truck battery

Current flows through the circuit when the circuit is in the _________________condition.

• Broken

• Open

• Closed

• Incomplete

A glowing filament will be

• At a low temperature

• At a high temperature

• At atmospheric temperature

• At the temperature of ice

A wire which melts and breaks the circuit when large current flows through it is called ______________.

• A fuse wire

• Electric wire

• Connecting wire

• Filament

The magnetic field around a current carrying coil

• Lasts for three hours

• Lasts as long as current flows through it

• Lasts till its half-life period

• Is permanent

Which of the following is not a circuit element?

• Battery

• Voltmeter

• Potential difference

• Resistor

A fuse wire is made up of alloy

• Nichrome

• Tin-lead

• Manganin

• Constantan

Copper wires are used as connecting wires because

• Copper has very high melting point

• Copper wires are very thick wires

• Copper wires offer a lower resistance

• None of these

The device used to make or break an electric circuit is

• Resistor

• Battery

• Switch

• Ammeter