Question

1) The electric bell works on the principle
of *
O Electrostatic Potential
O Heating effect of electric current
O magnetsim
O electromagnetism
2) The SI Unit of force is
pascal
​

Answer 1

Answer:

electromagnetism

Explanation:

Answer 2

Answer:

Explanation:

Heating effect of electric current ... An electric bell contains an electromagnet, consisting of coils of insulated wire wound round iron rods. When an electric current flows through the coils, the rods become magnetic and attract a piece of iron ... Name a common device that uses electromagnets