Electricity and Magnetism
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Law of Magnetism
SubtopicLaw of Magnetism under Electricity and Magnetism for Grade 7 ICSE.
Preview questions (no answers)
- 1.
Magnets are used in which of the following devices?
A.Electric bells
B.Thermometers
C.Glass windows
D.Wooden chairs
- 2.
Which of these objects will be attracted to a magnet?
A.A copper coin
B.An iron nail
C.A wooden pencil
D.A rubber eraser
- 3.
The space around a magnet where its force can be felt by other magnetic materials is its magnetic:
A.Zone
B.Area
C.Field
D.Space
Download the worksheet for Electricity and Magnetism - Law of Magnetism to practice offline. It includes additional chapter-level practice questions.
Magnetic Field
SubtopicMagnetic Field under Electricity and Magnetism for Grade 7 ICSE.
Preview questions (no answers)
- 1.
The Earth's magnetic axis is tilted at an angle of approximately ______ to its geographic axis.
A.B.C.D. - 2.
The magnetic field lines produced by a bar magnet are:
A.Two-dimensional
B.Three-dimensional
C.One-dimensional
D.Non-dimensional
- 3.
What does it mean when magnetic field lines are drawn as parallel straight lines?
A.The field is zero
B.The field is uniform
C.The field is changing
D.The field is weak
Download the worksheet for Electricity and Magnetism - Magnetic Field to practice offline. It includes additional chapter-level practice questions.
Electromagnets
SubtopicElectromagnets under Electricity and Magnetism for Grade 7 ICSE.
Preview questions (no answers)
- 1.
What is the effect of changing the core of an electromagnet from iron to steel?
A.It will not magnetize at all
B.It will become a permanent magnet and stay magnetic after the current stops
C.It will become 100 times stronger
D.It will melt the copper wire
- 2.
Why is an electromagnet called a 'temporary magnet'?
A.Because it breaks easily
B.Because it only works when electricity is flowing
C.Because it is made of cheap materials
D.Because it only lasts for one day
- 3.
Which of these properties of an electromagnet makes it useful for a telegraph system?
A.It is always magnetic
B.It can be quickly turned on and off to send signals
C.It is made of wood
D.It requires no maintenance
Download the worksheet for Electricity and Magnetism - Electromagnets to practice offline. It includes additional chapter-level practice questions.
Electric Bell
SubtopicElectric Bell under Electricity and Magnetism for Grade 7 ICSE.
Preview questions (no answers)
- 1.
The working of an electric bell demonstrates that electricity can produce:
A.Chemical changes
B.Magnetic fields
C.Permanent magnets
D.Nuclear energy
- 2.
Which of the following is the 'output' of an electric bell?
A.Electricity
B.Magnetism
C.Sound energy
D.Light energy
- 3.
If we replace the soft iron armature with a piece of wood, will the bell ring?
A.Yes, wood is a good conductor
B.Yes, wood is magnetic
C.No, wood is not attracted by the electromagnet
D.No, wood is too heavy
Download the worksheet for Electricity and Magnetism - Electric Bell to practice offline. It includes additional chapter-level practice questions.
Conductors and Insulators
SubtopicConductors and Insulators under Electricity and Magnetism for Grade 7 ICSE.
Preview questions (no answers)
- 1.
Which of the following is most likely to be a conductor?
A.A leather belt
B.A dry sponge
C.A nickel coin
D.A plastic toy
- 2.
The plastic or rubber covering on an electrical wire is known as:
A.The conductor
B.The circuit
C.The insulation
D.The filament
- 3.
Materials like gold and silver are excellent conductors but are not used for house wiring because they are:
A.Too heavy
B.Too brittle
C.Too expensive
D.Too soft
Download the worksheet for Electricity and Magnetism - Conductors and Insulators to practice offline. It includes additional chapter-level practice questions.