An instrument used to detect current in a circuit

Voltaic cell is called

Name a device that helps to maintain a potential difference across a circuit

The electrolite used in a Voltaic cell is

Objects having equal positive and negative charges are called

Who among the following proved that clouds contain electric charges?

A long cylindrical non-conducting tube on which insulated Copper wire is wound closely leaving no space between the turns is called

A temporary strong magnet of any required shape

To avoid rusting of iron, it is coated with

Frictional electricity is the electricity by