Kseeb Class 6 Science Chapter 12 Electricity and Circuits Solutions
Welcome to NCTB Solutions. Here with this post we are going to help 6th class students by providing KSEEB Class 6 Science chapter 12 Solutions, Electricity and Circuits. Here students can easily find all the answers for Electricity and Circuits chapter. Also here our Expert Science Teacher’s solved all the exercise questions with easily understandable language with proper guidance so that all the students can understand easily. Here in this post students will get chapter 12 solutions. Here all the solutions are based on Karnataka State Board latest syllabus.
Electricity and Circuits 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 terminals
(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
(3) Explain why the bulb would not glow in the arrangement shown in Fig. 12.13.
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. 12.14 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 plastic is an insulator which does not let the current pass the handles of the tools like screwdrivers and pliers used by electricians for repair has a plastic or rubber cover on it which protects them from a shock. (An electric shock)
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