Basic Electric Circuits AP  6th Class Science Bits 10th Lesson 

Basic Electric Circuits

AP  6th Class Science Bits 10th Lesson

Choose the correct answer.

Question 1.
In a bulb the part which gives us light is:
A) Metal base
B) Glass chamber
C) Filament
D) Terminals
Answer:
C) Filament

Question 2.
Electric non-conductor is
A) Copper
B) Aluminium
C) Iron
D) Rubber
Answer:
D) Rubber

Question 3.
Which of the following is a good conductor of electricity?
A) Paper
B) Plastic
C) Wood
D) Iron
Answer:
D) Iron

Question 4.
In which case will the bulb glow?

Answer:
B)

Question 5.
When small cells are connected in series, we get
A) Big cell
B) Battery
C) Dynamo
D) Generator
Answer:
B) Battery

Question 6.
In a series connection of bulbs, if one bulb gets fused, all the other bulbs in the series will
A) stop working
B) continuously work
C) few work and other few stop
D) all the above
Answer:
A) stop working

Question 7.
The filament is made up of
A) Copper
B) Iron
C) Tungsten
D) Aluminium
Answer:
C) Tungsten

Question 8.
Electricity requires
A) Open path
B) Filament
C) Open and closed path
D) Closed path to flow
Answer:
D) Closed path to flow

Question 9.
The world’s first experimental electric power plant was opened in
A) USA
B) USSR
C) UK
D) Germany
Answer:
C) UK

Question 10.
The Italian biologist who touched two pieces of metal to a dead frog’s leg and made it jump was
A) Franklin
B) Christian Oersted
C) Faraday
D) Luigi Galvani
Answer:
D) Luigi Galvani

Question 11.
Cell is
A) On / Off
B) Connector
C) Supplies current
D) Filament
Answer:
C) Supplies current

Question 12.
The bulb glows only in
A) closed circuit
B) open circuit
C) both A & B
D) none
Answer:
A) closed circuit

Question 13.
A device which produces electricity
A) Eraser
B) Cell
C) Screwdriver
D) None
Answer:
B) Cell

Question 14.
To prevent electric shock, electric wires cover with
A) paper
B) cotton
C) aluminum
D) plastic
Answer:
D) plastic

Question 15.
An electric cell has …….. terminals.
A) 1
B) 2
C) 3
D) 4
Answer:
B) 2

Question 16.
A device that is used to break an electric circuit is called
A) Switch
B) Bulb
C) Battery
D) Filament
Answer:
A) Switch

Question 17.
………….. glows in the bulb when a current pass through it.
A) switch
B) battery
C) filament
D) wire
Answer:
C) filament

Question 18.
Which is an example of an insulator?
A) water
B) iron
C) copper
D) rubber
Answer:
D) rubber

Question 19.
Which is an example for a conductor?
A) copper
B) wood
C) plastic
D) rubber
Answer:
A) copper

Question 20.
Edison used …………. as the first filament.
A) cotton
B) wood
C) platinum wire
D) bamboo fiber
Answer:
C) platinum wire

Question 21.
The word “electricity” was introduced by
A) Newton
B) William Gilbert
C) Benjamin Franklin
D) Oersted
Answer:
B) William Gilbert

Question 22.
Michael Faraday invented
A) Rubber
B) bulb
C) Cell
D) Electric generatar
Answer:
D) Electric generatar

Question 23.
When small cells are connected in parallel we get
A) Dynamo
B) Generator
C) Battery
D) Big cell
Answer:
A) Dynamo

Question 24.
In house connections, electric’ bulbs are connected in
A) series
B) parallel
C) random
D) series and parallel
Answer:
B) parallel

Question 25.
Who built the first large-scale electric power plants in the USA?
A) Thomas Edison
B) Oersted
C) Faraday
D) Franklin
Answer:
A) Thomas Edison

Question 26.
…………. invented the electric generator.
A) Franklin
B) Oersted
C) Thomas Edison
D) Michael Faraday
Answer:
D) Michael Faraday

Question 27.
………….. discovered static electricity.
A) Thales of Miletus
B) Gilbert
C) Franklin
D) Oersted
Answer:
A) Thales of Miletus

Question 28.
When a switch is off, the circuit becomes
A) closed
B) opens
C) both A & B
D) none
Answer:
B) opens

Question 29.
Plastic is an
A) insulator
B) conductor
C) neither insulator nor conductor
D) none
Answer:
A) insulator

Question 30.
Substances through which current can pass are called
A) insulators
B) conductors
C) both A & B
D) none
Answer:
B) conductors

Question 31.
Choose the correct option.
1. Source of electricity         A) Flows currently
2. Open circuit                     B) Cell
3. Closed circuit                   C) Doesn’t flow current
A) 1 – A, 2 – B, 3 – C
B) 1 – B, 2 – A, 3 – C
C) 1 – C, 2 – B, 3 – A
D) 1 – B, 2 – C, 3 – A
Answer:
D) 1 – B, 2 – C, 3 – A

Question 32.
Choose the correct option.
1. Thales                    A) Bulb
2. Filament                B) Static electricity
3. Edison                   C) Generator
4. Faraday                  D) Tungsten
A) 1 – A, 2 – C, 3 – B, 4 – D
B) 1 – D, 2 – B, 3 – C, 4 – A
C) 1 – B, 2 – D, 3 – A, 4 – C
D) 1 – B, 2 – D, 3 – C, 4 – A
Answer:
C) 1 – B, 2 – D, 3 – A, 4 – C

Question 33.
In street line connections, electric bulbs are connected in
A) series
B) parallel
C) random
D) series and parallel
Answer:
A) series

Question 34.
Identify the part ‘X’ symbol in the given figure

A) Metal cap
B) Filament
C) Terminals
D) Glass
Answer:
B) Filament

Question 35.
In the given circuit which acts as switch?

A) Bulb
B) Cell
C) Safety pin
D) Wires
Answer:
C) Safety pin

Question 36.
Choose the odd one in the following figures.

Answer:
A)

Question 37.
The materials required to make a simple circuit is
A) Bulb, wires
B) Bulb, switch, cells
C) Switch, cells, wires
D) Bulb, switch, cell, wires
Answer:
D) Bulb, switch, cell, wires

Question 38.
Which of the following acts as positive terminal in a torch cell?
A) Filament
B) Carbon rod
C) Metal spring
D) Copper wire
Answer:
B) Carbon rod

Question 39.
To prevent electric shock, electric wires cover with
A) Plastic
B) Cotton
C) Iron
D) Cloth
Answer:
A) Plastic

Question 40.
The central part of an electrical cell consists of
A) Copper rod
B) Zinc rod
C) Carbon rod
D) Iron rod
Answer:
C) Carbon rod

Question 41.
Bulb : Glass :: Filament : ………..
A) Tungsten
B) Iron
C) Copper
D) Aluminium
Answer:
A) Tungsten

Question 42.
The signs of terminals of a cell are
A) +, +
B) +, –
C) -, –
D) +, ×
Answer:
B) +, –

Question 43.
Identify the wrong part in figure

A) Glass chamber
B) Filament
C) Metal cap
D) None of these
Answer:
C) Metal cap

Question 44.
A bulb has
A) 2 Terminals and 1 filament
B) 2 Terminals and 2 filaments
C) 1 Terminal and 1 filament
D) Multiple terminals and single filament
Answer:
A) 2 Terminals and 1 filament

Question 45.
A complete electric circuit is called ……………. electric circuit
A) Open
B) Closed
C) Complete
D) None of these
Answer:
B) Closed

Question 46.
When circuit is open current will
A) flow
B) not flow
C) increase
D) Decrease
Answer:
B) not flow

Question 47.
Shortline on battery symbol represents the
A) Positive terminal
B) Negative terminal
C) Resistance
D) None of these
Answer:
B) Negative terminal

Question 48.
In the following arrangement shown in fig. the bulb will not glow if the ends A and B are connected with

A) A copper wire
B) A steel spoon
C) A metal clip
D) A plastic clip
Answer:
D) A plastic clip

Question 49.
Choose the incorrect statement.
A) A switch is the source of electric current in a circuit
B) A switch help to complete or break the circuit.
C) A switch helps us to use electricity as per our requirement.
D) Cell has two terminals.
Answer:
A) A switch is the source of electric current in a circuit

Question 50.
Electric cell (Battery) as shown in the figure, pointer ‘A’ indicates.

A) Filament
B) Holder
C) Positive terminal
D) Negative terminal
Answer:
C) Positive terminal

Fill in the blanks.

1. There are ………………. terminals in an electric cell. They are ………………. & ……………….
   Answer:
   Two, Positive (+) & Negative (- )
2. The substances which do not allow an electric current to flow through them are called ……………….
   Answer:
   insulator
3. The two metal wires fixed to a torch bulb act as two ……………….
   Answer:
   terminals
4. ………………. is the source of electric energy in a torchlight.
   Answer:
   terminals
   cell
5. The bulbs which do not ………………. are said to be fused.
   Answer:
   glow
6. Do not connect the two terminals of a cell with a ……………….
   Answer:
   single wire
7. The cell consists of ………………. rod at its center.
   Answer:
   carbon
8. ………………. filament is used finally by Thomas Alva Edison in his bulb.
   Answer:
   cotton

Match the following:

Question 1.
Group – A                                                Group – B
1) Miletus                            ( )             A) Primitive electric motor
2) William Gilbert                ( )             B) Two kinds of electric charge
3) Benjamin Franklin           ( )             C) Electrical Energy
4) Michael Faraday                ( )            D) Static Electricity
5) Thomas Alva Edison        ( )            E) Used the word ‘electricity’
–                                                          F) 1st large-scale electric power in the U.S.A.
Answer:
1) D
2) E
3) B
4) A
5) F

Question 2.
Group – A                                     Group – B
1) Cell                          ( )             A) Gives light
2) Filament                  ( )             B) Conductor
3) Switch                      ( )            C) Insulator
4) Copper wire             ( )            D) open/close circuit
5) Rubber coat             ( )            E) Source of electrical energy
Answer:
1) E
2) A
3) D
4) B
5) C