Free Electricity and Circuits 01 Practice Test - 6th grade 

Question 1

Electricity is not a form of energy.

A.

True

B.

False

SOLUTION

Solution : B

Energy is the ability to do work. Electricity is one of the forms of energy resulting from the flow of electric charges. With the help of electricity, we can do many things like operate machines, light bulbs, fans etc.

Question 2

Electricity is very essential for our day to day activities. 

A.

True

B.

False

SOLUTION

Solution : A

Electricity plays a huge part in our every day lives, whether it is at homes or our workplaces.

Our daily routines rely heavily on the use of electricity like using an iron, refrigerator, television, washing machine and so on.

Question 3

A battery made up of two cells has ________ terminals.

A. one
B. two
C. three
D. four

SOLUTION

Solution : B

There are two terminals in a battery. Battery terminals are the electrical contacts used to connect a load (for example, a bulb) to the battery. Number of terminals in a battery is independent of the number of cells used to make the battery.

Question 4

Which of the following appliances does not operate on an electric cell/battery?

A. Torch
B. TV remote
C. Walkie-talkie
D. Air conditioner

SOLUTION

Solution : D

Usually, electric cells/batteries are capable of producing very less amount of electric current. Devices like torch, TV remote, and walkie-talkie require less amount of current to function and the use of electric cell is preferred for these applications.
On the other hand, an air conditioner requires larger current. Air conditioner uses mains power supply for its working.

Question 5

A thin wire that emits light in a bulb is known as _____.

A.

insulator

B.

filament

C.

reflector

D.

refractor

SOLUTION

Solution : B

The thin wire that emits light is known as the filament of the bulb. It is generally made up of tungsten. When current passes through it, it heats up and glows.

Question 6

An ________________ is the path through which the electric current passes.
 

A.

electric circuit

B.

electric loop

C.

electric fabric

D.

electric insulator

SOLUTION

Solution : A

An electric circuit is a complete pathway for electricity to flow between the two terminals of the electric cell. A simple electric circuit has components like cell, wire, bulb or fan, resistor etc.

Question 7

In an electric circuit, current flows from __________ of the electric cell.

A. the positive terminal to the negative terminal
B. the negative terminal to the positive terminal
C. the neutral terminal to the positive terminal
D. the neutral terminal to the negative terminal

SOLUTION

Solution : A

In an electric circuit, the current flows from the positive terminal to the negative terminal of the cell. The image below gives the direction of current, where 'I' denotes the current. The direction of flow of electrons is opposite to the direction of flow of current.

Question 8

A device that can make or break a circuit is called as ______.

A. fuse
B.

switch

C.

reflector

D.

cell

SOLUTION

Solution : B

A switch is a device used to make or break the circuit. When it is switched on, it completes the circuit, letting the current to flow. When it is switched off, it breaks the path, restricting the flow of electric current.

Question 9

Materials which do not allow electric current to flow through them are known as insulators.

A.

True

B.

False

SOLUTION

Solution : A

Electrical insulators are materials which do not have free electrons in them and thereby do not allow electric current to flow through them. For example, wood, plastic, etc.

Question 10

To replace a copper strip in a circuit, which among the following should we use to complete the circuit?

A. Wood
B. Rubber
C. Plastic
D. Silver

SOLUTION

Solution : D

Silver and copper are good conductors of electricity and allow electricity to pass through them easily. So, we can use silver strip instead of copper strip in a circuit. However, plastic and wood are poor conductors of electricity and do not allow electric current to pass through them easily. Hence, they cannot be used to replace copper.