The leaves of a gold-leaf electroscope are enclosed in a glass jar so as to protect them against air drag.

The lower part of a thundercloud carries positive charges, while the upper part carries negative charges.

A lightning conductor is a long metal rod fixed on top of a tall building.

If a bulb has a power rating of 60 W, it means that the bulb consumes 60 units of electrical energy in one second.

One kilowatt-hour is also known as one unit.

The amount of units consumed in a house is read from the electricity meter every month and the electricity bill is generated.

The commercial unit of electricity is kilowatt.

Fuse is the weakest part of the circuit which melts and breaks the electric circuit in case of an overload.

A body becomes electrically charged if there is any imbalance in the number of electrons.

Which of the following statements is correct about a fuse wire?

Which of the following is the correct relation of electric power, electrical energy and time?

Which of the following is the commercial unit of electrical energy?

Which of the following is a safety component used in electrical circuits?

What is the cause of electrification of two different bodies on rubbing?