NCERT Solution for Class 6 Science: Ch 12 Electricity and Circuit
In NCERT Solution of class 6 subject Science category Physics lesson Electricity has questions, answers, sample paper, notes,pdf like solve paper of CBSE board.
Question 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 1:
(a) A device that is used to break an electric circuit is called switch.
(b) An electric cell has two terminals.
Question 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 2:
(a) True
(b) False
(c) False
Question 3:
Explain why the bulb would not glow in the arrangement shown in Fig. 12.13.
Answer 3:
the handle of screw adriver is made up of plastic which is an insulator doesn't allow pass current through it. As a result, the bulb will not glow.
NCERT Solution
page 124
Question 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.
Answer:
Question 5:
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Answer 5: switch is a device which allows current passing through the circuit by completing or opening the circuit.
In radio, TV, mobiles, torch and electric toys have in built switches
Question 6:
Would the bulb glow after completing the circuit shown in Fig. 12.14 if instead of safety pin we use an eraser?
Answer 6:
Since eraser is an insulator, so the circuit is open. As a result the bulb will not glow.
Question 7:
Would the bulb glow in the circuit shown in Fig. 12.15?
Answer 7:
Science both the wires are connected to only one terminal of the bulb, so current will not flow through the bulb and it would not glow.
Question 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 8:
The object is a conductor of electricity because the bulb glows as current pass through the object.
Question 9:
Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Answer 9:
Rubber is an insulator which does not allow pass current through it. So, if the electrician unknowingly touch the wire of the circuit doesn't get shock.
Question 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 10:
Since plastic or rubber is an insulator that means it does not allow passing of current through it. So, by wearing gloves and using screwdriver the electrician doesn't get shock
(a) A device that is used to break an electric circuit is called _______________.
(b) An electric cell has _______________ terminals.
Answer 1:
(a) A device that is used to break an electric circuit is called switch.
(b) An electric cell has two terminals.
Question 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 2:
(a) True
(b) False
(c) False
Question 3:
Explain why the bulb would not glow in the arrangement shown in Fig. 12.13.
Answer 3:
the handle of screw adriver is made up of plastic which is an insulator doesn't allow pass current through it. As a result, the bulb will not glow.
NCERT Solution
page 124
Question 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.
I
Answer:
Question 5:
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Answer 5: switch is a device which allows current passing through the circuit by completing or opening the circuit.
In radio, TV, mobiles, torch and electric toys have in built switches
Question 6:
Would the bulb glow after completing the circuit shown in Fig. 12.14 if instead of safety pin we use an eraser?
Answer 6:
Since eraser is an insulator, so the circuit is open. As a result the bulb will not glow.
Question 7:
Would the bulb glow in the circuit shown in Fig. 12.15?
Science both the wires are connected to only one terminal of the bulb, so current will not flow through the bulb and it would not glow.
Question 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 8:
The object is a conductor of electricity because the bulb glows as current pass through the object.
Question 9:
Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Answer 9:
Rubber is an insulator which does not allow pass current through it. So, if the electrician unknowingly touch the wire of the circuit doesn't get shock.
Question 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 10:
Since plastic or rubber is an insulator that means it does not allow passing of current through it. So, by wearing gloves and using screwdriver the electrician doesn't get shock
You May Also Like:
