Class 6 Science MCQ Electricity and Circuits

Question : _____________ is a safety wire which protect us from electric shocks and electric fire.

(a) Earth wire
(b) Neutral wire
(c) Live wire
(d) None of these

Question : ____________ is a device which converts chemical energy in to electrical energy.

(a) Electrical bell
(b) Electric lift
(c) Electric cell
(d) Electric bulb

Question : An electric cell has ____________terminals.

(a) 3
(b)4
(c)1
(d)2

Question : The central _____________of an electric cell is always positive.

(a) Circuit
(b) Chemical
(c) Terminal
(d) None of these

Question : Kerosene oil is an example of_______________.

(a) Conductors
(b) Insulators
(c) Electrolyte
(d) None of these

Question : The cylindrical container of electric cell is made of ___________ _and acts as negative terminal.

(a) Copper
(b) Iron
(c) Zinc
(d) Silver

Question : The wire which carries away the current to the power house is called____________.

(a) Earth wire
(b) Neutral wire
(c) Live wire
(d) None of these

Question : A bulb does not glow when a/an ________________ is used in the place of a switch.

(a) Iron nail
(b) Matchstick
(c) Aluminum
(d) copper

Question : Which of the following pairs consist of a conductor and an insulator of electricity?

(a) Wood and wool
(b) Copper and steel
(c) Silver and gold
(d) Silver and rubber

Question : Plastic, wood and Bakelite are some good ____________ of electricity.

(a) Absorbers
(b) Conductors
(c) Insulators
(d) reflectors

Question : Electrical wires and parts of electrical appliances are covered with ____________

(a) Silver b. Copper c. Gold d. plastic

Question : When the switch of an electric torch is in ON position electric current flows from the electric cell to the filament of an electric bulb due to which it gets ____ and the bulb ____.

(a) cooled, does not glow
(b) heated, does not glow
(c) heated, glows
(d) cooled, glows

Question : The second thick wire of the filament of an electric bulb is connected to a metal tip along the ____________ side of the metal cover at the base of the bulb.

(a) Conducting
(b) Insulating
(c) Short
(d) long

Question : A bulb in a closed circuit at times may not glow. Which of the following is not a cause for not glowing of the bulb?

(a) Connecting wires are made of wool.
(b) Energy of the cell in the circuit is completely exhausted.
(c) There may be a loose contact between the parts.
(d) The bulb is not fused.

Question : An electric cell produces electricity from the _____________ stored inside it.

(a) Current
(b) Energy
(c) Chemicals
(d) Light

Question : Filament of a bulb is made up of

(a) aluminium
(b) chromium
(c) platinum
(d) tungsten

Question : A device which supplies light without the use of electricity ?

(a) Electric torch
(b) Candle
(c) Electric rod
(d) Electric bell

Question : Which of these is a conductor?

(a) Rubber
(b) Mica
(c) Copper
(d) Wood

Question : Which of the following is bad conductor of electric current?

(a) Graphite
(b) Nichrome
(c) Diamond
(d) Iron

Question : A battery is

(a) a single cell
(b) a combination of cells in which cells are joined (+) to (-)
(c) a combination of cells in which cells are joined (+) to (+)
(d) None of these

Question : Materials, which do not allow electricity to pass through them easily, are called ____________ of electricity.

(a) Deflectors
(b) Insulators
(c) Conductors
(d) Absorbers

Question : ____________ allow electric current to pass through them.

(a) Absorbers
(b) Insulators
(c) Conductors
(d) Deflectors

Question : Which of the following is an insulator?

(a) Silver
(b) Iron
(c) Copper
(d) Rubber

Question : Metals are ____________ of electricity.

(a) Absorber
(b) Conductors
(c) Insulators
(d) Deflectors

Question : What supplies electricity to the torch bulb ?

(a) Switch
(b) Glass
(c) Wire
(d) Electric cells

Question : Combination of two or more cells is called

(a) battery
(b) cell
(c) bulb
(d) circuit

Question : In which case bulb will glow if following materials are placed in circuit?

(a) Thin plastic sheet
(b) Plastic comb
(c) Plastic clip
(d) Metal spoon

Question : What is earth wire?

(a) Safety wire
(b) Dangerous wire
(c) Useful wire
(d) Useless wire

Question : A bulb lights up only in

(a) a closed circuit
(b) an open circuit
(c) in both
(d) series connection

Question : Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is

(a) r/2
(b) 4r
(c) 2r
(d) r/4

Question : The circuits in which the bulb shines are:

(a) Closed circuit
(b) Circuit
(c) Open circuit
(d) None of above