What is meant by Joule's heating effect due to flow of current through a conductor?

Drift speed is the term used to describe the flow of current through a conductor. Does it represent the speed of the current or its strength ?

What is meant by the heating effect of current ? Name two appliances which work on the heating effect of current.

What are the differences between the flow of electric current through metal conductors and electrolytes?

(a) Derive the expression for the heat produced due to a current 'I' flowing for a time interval 't' through a resistor 'R' having a potential difference 'V' across its ends. With which name is this relation known? (b) How much heat will an instrument of 12W produce in one minute if its is connected to a battery of 12V? (c) The current passing through a room heater has been halved. what will happen to the heat produced by it? (d) What is meant by the heating effect of current? Give two applications of the heating effect of current. (e) Name the material which is used for making the filaments of an electric bulb.

State Joule's law about heating effect of electric current.

The flow of the electric current through a metallic conductor is