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Class 6 - Science

Electricity and Circuits

Q&A
Question:

Write one use of insulators.

Answer:

 Insulators are used in making switchboard, handles of testers, screw drivers.



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Questions and Answers


Electricity and Circuits - Questions
1.

What is solar cell?


Answer
2.

The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?


Answer
3.

Mention two advantages of a dry cell.


Answer
4.

What is dry cell?


Answer
5.

Using the"conduction tester” on an object it was found that the bulb begins to glow. Is  that object a conductor or an insulator? Explain.


Answer
6.

Give one activity to prove that air is an insulator.


Answer
7.

Name the scientist who invented electric cell and the scientist who invented electric bulb.


Answer
8.

Fill in the blanks:
(a) A device that is used to break an electric circuit is called_______________
(b) An electric cell has___________


Answer
9.

Would the bulb glow after completing the circuit shown in Fig. 12.9 if instead of safety pin we use an eraser?


Answer
10.


Answer
11.

Name the +ve terminal of dry cell.


Answer
12.

What is open circuit?


Answer
13.

Write one use of insulators.


Answer
14.

Define conductors and insulators. Give one example of each.


Answer
15.

Mark ˜True' or ˜False' for the following statements:
(a) Electric current can flow through metals.
(b) Instead of metal wires, a jute string can be used to make a circuit.
(c) Electric current can pass through a sheet of thermocol.


Answer
16.

Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.


Answer
17.

What is the name of thin wire in the electric bulb?


Answer
18.

Mark ˜True' or ˜False' for the following statements:
(a) Electric current can flow through metals.
(b) Instead of metal wires, a jute string can be used to make a circuit.
(c) Electric current can pass through a sheet of thermocol.


Answer
19.

Name the -ve terminal of a dry cell.


Answer
20.

What is the direction of flow of current in a dry cell?


Answer
21.

Would the bulb glow in the circuit shown in Fig. 12.11.
ncert-solutions-for-class-6th-science-chapter-12-electricity-and-circuits-4


Answer
22.

What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.


Answer
23.

Explain why the bulb would not glow in the arrangement shown in fig
ncert-solutions-for-class-6th-science-chapter-12-electricity-and-circuits-1


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24.

In any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot?


Answer
25.

If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why?


Answer
26.

The headlights of a car have reflectors behind the bulb. What is the function of reflectors?


Answer
27.

(1)What is electric circuit?
(2)How many types of electric circuit are there? Define them.
(3)Draw a diagram to show the closed circuit for switch, bulb and dry cell.


Answer
28.

Draw a diagram showing the two terminals of a bulb.


Answer
29.

Complete the drawing shown in Fig. 12.9 to indicate where the free ends of the two wires should be joined to make the bulb glow.
ncert-solutions-for-class-6th-science-chapter-12-electricity-and-circuits-2


Answer
30.

Draw the circuit diagram for operating a bulb with the help of a dry cell.


Answer
31.

Identify conductors and insulators from the following:Eraser, paper, matchstick, copper wire, pencil lead, polythene


Answer
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