Electricity & Circuits

Q.1: The path along which an electric current can flow is called as ‘__________’.

a) electric cell

b) electric circuit

c) electric battery

Q.2: Electric current flows from negative terminal to positive.

a) True

b) False

Q.3: Which of the following is/are the part of an electric circuit ?

a) connecting wires

b) cell

c) both

Q.4: An electric bulb may get fused if its _________ is broken.

a) metal cap

b) wire

c) filament

Q.5: Our body is a _______ conductor of electricity.

a) good

b) bad

c) neutral

Q.6: Which is not a preventive measure to avoid electric shocks ?

a) Never touch electric gadgets with dry hands.

b) Never touch electric poles on the toad.

c) Never repair electric gadgets without wearing rubber gloves.

Q.7: An electric _______ is a simple device to open or close an electric circuit.

a) cell

b) switch

c) battery

Q.8: Filament is made up of ___________.

a) iron

b) tungsten

c) silver

Q.9: When the electric circuit is __________, the bulb glows.

a) complete

b) incomplete

c) broken

Q.10: A switch is also referred to as ‘_____’ in an electric circuit.

a) key

b) cell

c) wire

Q.11: Two or more cells connected end to end is called _________.

a) electric circuit

b) gadget

c) battery

Q.12: An electric bulb has an outer case made up of _________.

a) steel

b) tungsten

c) glass

Q.13: The metal tip at the centre of the base and metal casing at its lower end, acts as ____________ of the electric bulb.

a) terminals

b) switch

c) battery

Q.14: There are ________ metal strips in an electric torch.

a) three

b) five

c) ten

Q.15: At the centre of the container of an electric cell, ________ rod is there.

a) lead

b) carbon

c) manganese

Q.16: Which of these is an advantage of electric cell ?

a) They are perfectly unsafe.

b) They are lightweight and portable.

c) They are very costly.

Q.17: The zinc container of an electric cell acts as a ________ terminal.

a) positive

b) negative

c) none

Q.18: The carbon rod inside the electric cell is surrounded by the mixture of ________________ and ________________.

a) zinc and ammonium chloride

b) manganese dioxide and powdered charcoal

c) carbon and zinc oxide

Answers:

1. b
2. b
3. c
4. c
5. a
6. a
7. b
8. b
9. a
10. a
11. c
12. c
13. a
14. a
15. b
16. b
17. b
18. b