Electricity And Circuits - Class 6 Physics - Extra Questions

Wires carrying electricity should not be touched bare footed. True/False? Justify.



Fill in the blanks :
A ______   is used to operate small devices such as calculator and TV remote.



An electric .......... is a continuous path along which the current flows.



What is the reason for using Tungsten as a filament in electric bulb?



The symbol of a cell is _________.



A dry cell converts one form of energy into another form. Name these two forms of energy.



An electric cell produces electricity from the __________ stored in it.



Describe an electric cell with the help of a labelled diagram.



Give examples for poor solid conductors and liquid conductors.



An electric fuse is an important application of the __________.



Would the bulb glow in the circuit shown in the figure?

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What is the name of thin wire in the electric bulb?



Give one example each of a conductor and an insulator of electricity.



Name the material which is the best conductor of electricity.



Why are copper and aluminium wires usually used for electricity transmission ?



Which effect of current is utilised in the working of an electric fuse ?



In which of the following circuits A, B and C given in Fig. 12.4, the cell will be used up very rapidly?

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A fused bulb does not glow. Why?



Paheli wanted to glow a torch bulb using a cell. She could not get connecting wires, instead, she got two strips of aluminium foil. Will she succeed? Explain, how?



Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram. 



A torch is not functioning. though contact points in the torch are in working condition. What can be the possible reasons for this? Mention any three.



Distinguish between a closed circuit and an open circuit, with the use of suitable labelled diagram.



The diagram shows three lamps and three switches 1,2 and 3 
a) Name the switch/switches to be closed so as to light all the three lamps.
b) How are the lamps connected: in series or in parallel?
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What does an electric circuit mean?



What is an electric circuit ?



Select conductors of electricity from the following:
Copper wire, silk thread, pure water, acidulated water, human body, glass, mercury.



Draw a circuit diagram for operating a bulb with the help of a dry cell 



How many types of electric circuit are there ?



What is an electric circuit? Distinguish between an open and a closed circuit.



Draw a diagram to show the closed circuit for switch, bulb and dry cell



Following table gives the resistivity of three samples in $$(\Omega m) $$ 
A) $$1.6 \times 10^{-8}\ \Omega m $$ 
B) $$7.5 \times 10^{-7}\ \Omega m $$ 
C) $$44 \times 10^{-6}\ \Omega m $$ 
Which of them is a good conductor ? And which of them is an insulator ? Explain why ?



In the figure given, A and B, show a bulb connected to a cell in two different ways. What will he the direction of the current through the bulb in both cases? (Q to P or P to Q) 
 
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Two sets A and B of four bulbs each are glowing in two separate rooms. When one of the bulbs in set A is fused, the other three bulbs also cease to glow. But in set B, when one bulb fuses the other bulbs continue to glow. Explain the difference.



When should we say the circuit is open?



The figure given, A and B, show a bulb connected to a cell in two different ways.  
Will the bulb glow in both cases?


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Class 6 Physics Extra Questions