Font size
WorksheetsElectricity and magnets revision
Total questions: 36
Worksheet time: 18mins
Which of the following need electricity to work ?
Refrigerator
Table
Laptop
Pen
A/An ____________ is a material that electricity CANNOT pass through easily.
Conductor
Insulator
wire
switch
Material that electricity CAN pass through easily is called a/an ________________.
conductor
insulator
Which of the following is an insulator?
copper
aluminum
steel
rubber
Which of the following is a conductor?
glass
copper
plastic
rubber
Which of these does not conduct electricity
brass spoon
silver jewellery
steel tumbler
plastic jug
In an electric torch, electric energy is converted into
light energy
both light and heat energy
sound energy
heat energy
You are a scientist who has to make a satellite to send into orbit in outer space.Which of these will you use as a source of power in the satellite.
dry cell
solar cell
rechargeable cells of the type used in cars.
hydro electricity
Metals are ________of electricity.
good conductors
bad conductors
In a dry cell, the end with the metal cap is the ____terminal.
positive
negative
____ is the positive terminal of an electrical cell.
Metal disc
Metal case
Metal cap
Metal base
The tiny coiled metal wire present inside the bulb is called ___
Element
Conductor
Filament
None of these
A combination of two or more electric cells is called _____
Electric circuit
Battery
Terminals
None of these
An electric bulb has ____ terminals.
3
4
1
2
_____ is an electric device which easily closes or opens an electric circuit.
Filament
Electric bulb
Electric switch
Electric cell
Electric energy is produced from the ______ within the cell.
Chemicals
Metals
Terminals
None of these
For electrical energy to flow, there must be a(n) ______.
good battery
copper wire
on/off switch
closed circuit
A PATH along which electricity can flow is a ___________________?
switch
light bulb
circuit
insulator
When a circuit is open, the circuit is _________?
ON
OFF
When a circuit is closed, the load is _____________?
ON
OFF
Why is it unsafe to switch on a bulb with wet hands?
The switch blows off.
It can give a shock.
The bulb gets fused.
The wires are disconnected.
Why do electricians wear gloves made of rubber?
It is soft.
It is waterproof.
It is an insulator.
It is inexpensive.
If we touch a a live wire carrying current, we get a shock. This is because our body is a/an
conductor of electricity
insulator of electricity
source of electricity
None of these
Which among the following metal is used for making electric wires?
Graphite
Zinc
Copper
Iron
Why is a switch used in a circuit?
To complete or break a circuit
To save energy
To prevent electric shocks
To make the bulb glow easily
A magnet comes to a rest in _________________ direction when freely suspended.
north-south
south-west
north-west
south-east
What happens when two bar magnets repel each other?
The poles of the magnets pull toward each other.
The centers of the magnets pull toward each other.
The centers of the magnets push away from each other.
The poles of the magnets push away from each other.
What would we call a nail that can pick up a paperclip because it is touching a magnet?
force
detector
poles
temporary magnet
Hassaan used a magnet to hold one piece of paper on the refrigerator. Later, she tried to use the same magnet to hold a stack of four pieces of paper, and the magnet wouldn't stick to the fridge. Why did this happen?
Paper repels magnets
The magnet needs glue
The magnet couldn't hold due to the thickness of the paper
A magnet isn't attracted to the refrigerator.
Which statement is true?
All magnets can attract large objects
Magnets can not pull through Solids.
All Magnets have the Same shape and Size
All Magnets have a North and a South Pole
An electromagnet is a magnet that
its strength can be varied and turned on and off
always has a magnetic field around it
has very little strength
Observe the pictures A and B given below carefully. Which of the following statements is correct for the above given pictures ?
In A, cars 1 and 3 will come closer and in B, cars 2 and 4 will come closer.
In A, cars 1 and 3 will move away from each other and in B, cars 2 and 4 will move away.
In A, cars 1 and 3 will move away and in B, 2 and 4 will come closer to each other
In A, cars 1 and 3 will come closer to each other and in B, 2 and 4 will move away from each other
The arrangements to store two magnets is shown by figures (a), (b), (c) and (d). which one of them is the correct arrangement?
A
B
C
D
Three magnets A, B and C were dipped one by one in a heap of iron filings. The figures below show the amount of the iron filing sticking to them. The strength of these magnets will be
A > B > C
A < B < C
A = B = C
A < B > C
Two ring magnets A and B are put through a rod as shown. Why is magnet A suspended over magnet B?
The unlike poles of the magnets face each other
The like poles of the magnets face each other
The rod is made of a magnetic material
Magnet X is lighter than magnet Y
Magnetite
each of the two points of a magnet where the magnetic strength is maximum
a rock made of iron oxide that has magnetic properties
the force exerted by a magnet on magnetic materials in its magnetic field
to lose magnetism and magnetic properties
