Electric Current and Electric Circuits
Important Questions on Electric Current and Electric Circuits
Differentiate between the following: An open circuit and a closed circuit
Metals can be used as insulators.
Explain the following term: insulation
Explain the following term: a closed circuit
Explain the following term: battery
Explain the following term: a cable or 'lead'
Explain the following term: an open circuit
Give one word for the following: A device for breaking a circuit.
(Choose from the following: Fuse/ Electric bulb/ Electric motor)
A metallic wire coated with an insulating material and used for the conduction of electricity.
(Choose from the list: Cable, cell and circuit)
Give one word for the following: Coating of a conductor with a non-conductor of electricity.
Give one word for the following: A material which does not allow electric current to pass through it.
Give one word for the following: A material which allows electric current to pass through it.
Give one word for the following: A simple device used to 'close' or 'open' a circuit.
What precautions should be taken while experimenting with electricity?
What are the three ways in which electricity serves us?
Name the three kinds of fuse used as safety device on a circuit
Why do we make use of a fuse in a circuit?
What are the factors which heat up a circuit.
Name some appliances in which we make use of heating effect of electricity
What do you understand by insulators.
