Question

a) Explain how a magnetic needle and a bulb help in testing the conduction of electricity
by different materials. Which of the two is more effective in testing the conduction of
electricity by liquids? Give a reason for your answer.​

Answer 1

Answer:

Your elders might have cautioned you against touching an electrical appliance with wet hands. But do you know why it is dangerous to touch an electrical appliance with wet hands?

We have learnt earlier that the materials, which allow electric current to pass through them, are good conductors of electricity. On the other hand, materials, which do not allow electric current to pass through them easily, are poor conductors of electricity.