Predict whether each of the following objects will be conductors or insulators of electricity.
a key, a glass bottle, a cork, a plastic spoon

Object	Material the object is made from	Electrical conductor	Electrical insulator

The $1800 \mathrm{C}$ electric charge is passing through an electric bulb in one hour. How much current will pass through an electric bulb ?

Name and define unit for electric current.

Which device is used to check the presence of electric current?

Define electric current and give its SI unit.

The S.I. unit of electric current is _____.

What is a conductor of electricity? Give two examples.