Question

D. Short-answer type questions :
1. Why do we get electric shocks?

2. What is an electric tester?

3. When the free ends of a tester are dipped into a solution, the magnetic needle shows
deflection. Explain the reason.
(Diagram in the photo).

4. What is electrolysis? How is it useful in industry?

5. Name three liquids which when tested in the manner shown in figure may cause the
magnetic needle to deflect.

6. In case of a fire, before the firemen use the water hoses, they shut off the main electrical
supply for the area. Explain why they do this.

7. Is it safe for the electrician to carry out electrical repairs out doors during heavy down pour? Explain.

8. A boy staying in a coastal region tests the drinking water and also the sea water with his tester. He found that the
compass needle deflects more in the case of sea water. Explain the reason.​

Answer 1

Answer:

Explanation:

Electrons move more easily through certain materials like metal, which scientists call conductors. ... That tiny shock you feel is a result of the quick movement of these electrons. You can think of a shock as a river of millions of electrons flying through the air.