What is magnetic effect of electric current.

Which of the following electrical appliances works on the principle of the magnetic effect of electric current ?

In which of the following electrical appliances the principle of the magnetic effect of electric current is used?

Which of the following devices does not work on the principle of magnetic effects of electric current?

How does the magnetic effect of electric current help in the working of an electric bell? Explain with the help of a diagram.

What is heating effect of electric current? What is its origin?

Classify the following into the heating effect of electric current and the magnetic effect of electric current: Fuse wire, ammeter, electric iron, microphone, electric bulb, electric bell, galvanometer, electric cooker, loud speaker, geyser, electric generator, electric motor, telephone receiver, radio, stereo speaker.