NCERT Solution for Science Class 6 Ch 9 Electricity and Circuits

NCERT Solution for class 6 Science Chapter 9 Electricity and Circuits provided here will aid you in better understanding of the concepts involved in CBSE Class 6 Syllabus. Detailed answer and explanations provided here will clear your all doubts and on Concepts of Electricity

Q.1. Fill in the blanks :
(a) A device that is used to break an electric circuit is called____________.
(b) An electric cell has__________ terminals.
Answer:
(a) switch
(b) two

Q.2. Mark 'True' or 'False' for 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 thermo Col.
Answer:
(a) True
(b) False
(c) False

Q.3. Explain why the bulb would not glow in the arrangement shown in Fig. 9.13.
NCERT Solution for Electric Circuit arrangement Class 6 Science Ch 9
Answer:

The bulb will not glow because the circuit is disconnected due to presence of an insulator in between.

Q.4. Complete the drawing shown in Fig. 9.14. to indicate where the free ends of the two wires should be joined to make the bulb glow.
NCERT Solution for Class 6 Science Ch 9 Electricity and Circuits




Answer:

NCERT Solution for Class 6 Science Ch 9 Electricity and CircuitsQ.5. What is the purpose of using an electric switch ? Name some electrical gadgets that have switches built into them.
Answer:
Switch is a simple device that is used to either break the electric circuit or to complete it. 
Electric gadgets that have switches built into them are microwaves, freezes, automatic electric irons, toasters, patty makers.

Q.6. Would the bulb glow after completing the circuit shown in Fig. 9.14 if instead of safety pin we use an eraser ?
NCERT Solution for Class 6 Science Ch 9




Answer:

'No', an eraser is an insulator.

Q.7. Would the bulb glow in the circuit shown in Fig. 9.15 ?
NCERT Solution for Class 6 Science Ch 9



Answer:
'No'

Q.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.
Answer:
That object is a conductor because electricity can pass through only a conductor and not through an insulator. Unless the object is conductor, the bulb could not glow.

Q.9. Why should an electrician use rubber gloves while repairing an electric switch at your home ? Explain.
Answer:
The rubber gloves are insulators. This saves the electrician from getting an electric shock. So, an electrician uses rubber gloves, while repairing an electric switch.

Q.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 ?
Answer:
Plastic and rubber, both are bad conductor of electricity. Hence, they protect against electric shock.
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