Ncert Science Class 6 Solutions Chapter 9 Electricity and Circuits
Welcome to NCTB Solutions. Here with this post we are going to help 6th class students for the Solutions of NCERT Class 6 Science Book Chapter 9, Electricity and Circuits. Here students can easily find step by step solutions of all the questions for Electricity and Circuits. Also our Expert Science Teacher’s solved all the questions with easily understandable language with proper guidance so that all the students can understand easily. Here in this post students will get chapter 9 solutions. Here All the solutions are based on NCERT latest syllabus.
Electricity and Circuits Exercise question Solutions :
(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
(2) Mark ‘True’ or ‘False’ for following statements:
(a) Electric current can flow through metals.
Answer :
This statement is True.
(b) Instead of metal wires, a jute string can be used to make a circuit.
Answer :
This is False.
Because, to make a circuit we need the electricity conductors and jute string is a bad conductor of electricity so it can’t be used for making a circuit.
(c) Electric current can pass through a sheet of thermo Col.
Answer :
This is False.
Because, electric current can only flow through the good conductor of electricity and hence it can’t flow through the thermo col sheet.
(3) Explain why the bulb would not glow in the arrangement shown in Fig. 9.13.
Answer :
Here in this condition the bulb would not glow as we know plastic is a insulator which does not let the current pass and here the circuit is not completed because of the insulator present on the screw driver in center hence the bulb will not grow.
(5) What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Answer :
Firstly a switch is a simple device that either breaks the circuit or completes it and the switch is used to complete a electric circuit to make it on or off it is used in daily life by us while switching on the fan TV fridge etc. and the switch built-in it are torch, fan, TV etc.
(6) Would the bulb glow after completing the circuit shown in Fig. 9.14 if instead of safety pin we use an eraser?
Answer :
No, the bulb will not glow as eraser is an insulator. A safety pin is made of metal a good conductor of current
A rubber is an insulator which does not make circuit complete hence the bulb doesn’t glow.
(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 :
Firstly the bulb glows when the circuit is complete and the circuit is completed when the good conductor of electricity is joint and in this condition if the bulb glows up the conduction tester is a conductor if it was an insulator the bulb would not glow.
(9) Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Answer :
As we know that rubber is an insulator and it does not lets the current pass hence the electrician use the gloves (rubber) to protect him from getting the electric shock.
(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 :
The handles of tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber cover on them. They plastic or rubber do not allow the current to pass through them and electricians save from electrical shock.
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