Electricity and Circuits Class 6 Science Chapter 12 Question

Class 6 Science Chapter 12 Electricity and Circuits Ncert Solutions are provided here. NCERT Intext and End Exercise questions of Class 6 Science Chapter 12 Electricity and Circuits.

Class 6 Science Chapter 12 : Electricity and Circuits

Electricity and Circuits is the twelfth chapter of NCERT Text book of Class 6 Science. The end exercise and intext questions are comprised of the topics – Cell, electricity, circuits, A bulb , filament, current, electric switch, conductors and insulators,

Chapter 12 : Electricity and Circuits ( Ncert Solutions)

SubjectScience
Class 6th – ( Class VI )
Chapter Chapter 12 : Electricity and Circuits
Study MaterialNCERT intext and End Exercise Solutions
Total Questions 10 Questions
Text BookNCERT Text Book

NCERT Solutions Class 6 Science Chapter 12 : Electricity and Circuits

Ques. 1 : Fill in the blanks :
(a) A device that is used to break an electric circuit is called _______________ .
Ans. Switch
A device that is used to break an electric circuit is called Switch.

(b) An electric cell has ____________ terminals.
Ans.
two
An electric cell has two terminals.

Ques. 2 : Mark ‘True’ or ‘False’ for following statements:
(a) Electric current can flow through metals.
Ans. True

(b) Instead of metal wires, a jute string can be used to make a circuit.
Ans. False

(c) Electric current can pass through a sheet of thermo Col.
Ans.
False

Ques. 3 : Explain why the bulb would not glow in the arrangement shown in Fig. 12.13.

figure 12.13

Ans. In the figure 12.13 , we see that the screw driver is made up of plastic and metallic rod. and we know that plastic is an insulator. This insulator side of the screwdriver does not allow the passage of current through it. So the the bulb would not glow in the arrangement given in figure 12.13.

Ques. 4 : Complete the drawing shown in Fig 12.14 to indicate where the free ends of the two wires should be joined to make the bulb glow.

figure 12.14

Ans. The completed circuit for the bulb to glow is given below.

completed figure to glow the bulb

Ques. 5 : What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Ans.
A switch is a device that either breaks a circuit or completes it. The switches used in the lighting of electric bulb and other electrical appliances work on the same principle.

Electrical gadgets that have the switched built into it are – Mobile, Radio, Torch, Electric toys.

Ques. 6 : Would the bulb glow after completing the circuit shown in Fig. 12.14 if instead of safety pin we use an eraser?
Ans.
If use a rubber (eraser) instead of safety pin in the figure 12.14 then the bulb will not glow because the rubber ( eraser) is an insulator which makes the circuit incomplete.

Ques. 7 : Would the bulb glow in the circuit shown in Fig. 12.15?

figure : 12.15

Ans. NO, the bulb in the arrangement given in figure 12.15 does not glow because both the terminals of the cell are connected to the same terminal of the bulb.

The other end of the cell must be connected to below side of the bulb to make it glow.

Ques. 8 : 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.
Ans.
Yes , if the object is a good conductor of electricity then current will pass through the conduction tester and the bulb will glow. Hence the object will be a conductor of electricity.

Ques. 9 : Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Ans.
Our body us a good conductor of electricity and rubber is an insulator. During the repairing work if the body comes in contact with current carrying wire then there will not be any accident as rubber does not allow the passage of current through it.

Hence the electrician uses a rubber gloves while repairing an electric switch.

Ques. 10 : 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?
Ans.
Rubber is bad conductor of electricity. It does not allow current to flow through it. Hence , handles of tools such as screwdrivers, pliers, etc. which are used by electricians for repair work usually have plastic or rubber cover on them.

It protects them getting a electric shock.