Extra 40 MCQs with answers from Chapter:12 Electricity and Circuits of Class 6 Science (CBSE):-
Which of the following is a good conductor of electricity?
a) Rubber
b) Plastic
c) Copper
d) Wood
Answer:
c) Copper
What is the source of electricity in a torch?
a) Battery
b) Wire
c) Bulb
d) Switch
Answer:
a) Battery
A device that opens or closes an electrical circuit is called a ____.
a) Battery
b) Bulb
c) Switch
d) Wire
Answer:
c) Switch
Which of the following is NOT a part of an electric circuit?
a) Battery
b) Bulb
c) Book
d) Wire
Answer:
c) Book
What is the function of a switch in an electric circuit?
a) To turn the circuit on or off
b) To store electricity
c) To generate electricity
d) To reduce voltage
Answer:
a) To turn the circuit on or off
The electric cell produces electricity using ____.
a) Wind energy
b) Chemical energy
c) Light energy
d) Sound energy
Answer:
b) Chemical energy
What is the name of the thin wire inside an electric bulb that produces light?
a) Switch
b) Glass
c) Filament
d) Base
Answer:
c) Filament
A material that does NOT allow electricity to pass through is called ____.
a) Conductor
b) Insulator
c) Circuit
d) Fuse
Answer:
b) Insulator
Which of the following is NOT a conductor of electricity?
a) Iron nail
b) Silver coin
c) Aluminium foil
d) Eraser
Answer:
d) Eraser
The positive terminal of a battery is marked with ____.
a) - (negative sign)
b) + (positive sign)
c) * (asterisk)
d) = (equal sign)
Answer:
b) + (positive sign)
A simple circuit consists of ____.
a) Battery, bulb, wire, switch
b) Bulb, book, glass, wire
c) Cell, paper, switch
d) Battery, magnet, iron rod
Answer:
a) Battery, bulb, wire, switch
The path through which electricity flows is called a ____.
a) Wire
b) Circuit
c) Battery
d) Bulb
Answer:
b) Circuit
In a
closed circuit
, the bulb ____.
a) Glows
b) Does not glow
c) Bursts
d) Breaks
Answer:
a) Glows
In an
open circuit
, the bulb ____.
a) Glows
b) Does not glow
c) Becomes hot
d) Breaks
Answer:
b) Does not glow
When the switch is OFF, the circuit is ____.
a) Closed
b) Open
c) Flowing
d) Conducting
Answer:
b) Open
Which of the following is used as a safety device in electrical circuits?
a) Wire
b) Filament
c) Fuse
d) Battery
Answer:
c) Fuse
A
series circuit
has ____.
a) One path for current flow
b) Multiple paths for current flow
c) No path for current
d) Parallel paths for current
Answer:
a) One path for current flow
Which part of an electric cell is a good conductor?
a) Plastic covering
b) Metal cap
c) Paper label
d) Cardboard case
Answer:
b) Metal cap
A switch must be made of ____.
a) Conducting material
b) Insulating material
c) Rubber
d) Wood
Answer:
a) Conducting material
Which of the following materials is used for making electric wires?
a) Rubber
b) Paper
c) Copper
d) Wood
Answer:
c) Copper
Which of the following is a
good conductor
of electricity?
a) Glass
b) Plastic
c) Iron
d) Rubber
Answer:
c) Iron
Which material is
not
a conductor of electricity?
a) Aluminium
b) Copper
c) Plastic
d) Silver
Answer:
c) Plastic
A fuse is used in electrical circuits to ____.
a) Conduct electricity
b) Break the circuit in case of excess current
c) Store electricity
d) Generate electricity
Answer:
b) Break the circuit in case of excess current
Which of the following is
not a part of an electric circuit
?
a) Bulb
b) Battery
c) Wire
d) Plastic sheet
Answer:
d) Plastic sheet
The flow of electric current is due to the movement of ____.
a) Neutrons
b) Electrons
c) Protons
d) Atoms
Answer:
b) Electrons
A
dry cell
contains ____.
a) Liquid chemicals
b) Solid chemicals
c) Air
d) Metal
Answer:
b) Solid chemicals
An electric bulb produces ____.
a) Light only
b) Heat only
c) Light and heat
d) Sound and light
Answer:
c) Light and heat
Which of the following is
not an insulator
?
a) Glass
b) Rubber
c) Aluminium
d) Plastic
Answer:
c) Aluminium
What happens when a wire is disconnected in a circuit?
a) The circuit remains closed
b) The circuit becomes open and stops working
c) The bulb glows brightly
d) The battery gets charged
Answer:
b) The circuit becomes open and stops working
The
two terminals of an electric cell
are called ____.
a) North and South
b) Positive and Negative
c) Input and Output
d) Left and Right
Answer:
b) Positive and Negative
Which of these appliances uses electricity?
a) Fan
b) Television
c) Washing machine
d) All of the above
Answer:
d) All of the above
The power supply in our houses is in ____.
a) AC (Alternating Current)
b) DC (Direct Current)
c) Both AC and DC
d) None of the above
Answer:
a) AC (Alternating Current)
The bulb in a circuit glows when ____.
a) The circuit is closed
b) The circuit is open
c) The wire is broken
d) The switch is off
Answer:
a) The circuit is closed
34. What happens when we use too many electrical appliances at the same time?
a) The circuit remains normal
b) The appliances work better
c) The circuit may overload and cause a short circuit
d) The current flow stops completely
Answer: c) The circuit may overload and cause a short circuit
35. What happens when a battery is connected incorrectly in a circuit?
a) The circuit still works normally
b) The bulb glows more brightly
c) The bulb does not glow as electricity cannot flow properly
d) The battery gets charged automatically
Answer: c) The bulb does not glow as electricity cannot flow properly
36. Which of the following is an example of an insulator?
a) Copper wire
b) Aluminium sheet
c) Plastic ruler
d) Iron nail
Answer: c) Plastic ruler
37. What will happen if a fuse wire is too thick?
a) It will break easily
b) It will not break even in case of excessive current, causing danger
c) It will glow brightly
d) It will store electricity
Answer: b) It will not break even in case of excessive current, causing danger
38. What is the function of a battery in an electric circuit?
a) It provides energy for the circuit
b) It blocks the flow of current
c) It helps in breaking the circuit
d) It acts as an insulator
Answer: a) It provides energy for the circuit
39. What will happen if the filament of a bulb is broken?
a) The bulb will glow normally
b) The bulb will glow brighter
c) The bulb will not glow as the circuit is broken
d) The battery will produce more power
Answer: c) The bulb will not glow as the circuit is broken
40. Which of the following statements is true?
a) A switch is always connected in parallel to a circuit
b) A fuse prevents excessive current from flowing in a circuit
c) An insulator allows electricity to pass through it
d) Electric wires are made of rubber
Answer: b) A fuse prevents excessive current from flowing in a circuit
