ICSE Worksheet for Chapter - 9 Magnetism & Electromagnetism Class 8
Worksheets For class 8
Find ICSE Worksheet for chapter-9 Magnetism & Electromagnetism class 8
- CLASS-8
- BOARD: ICSE
- PHYSICS Worksheet - 9
- TOPIC: Magnetism & Electromagnetism
- For other ICSE Worksheet for class 8 Science check out main page of Physics Wallah.
SUMMARY
- Magnets –Types, properties, Magnetic field, Magnetic field of the earth
- Electromagnetism, Magnetic field due to a straight and circular current carrying wire
- Solenoid, Uses of Electromagnets, Electric bell, Electric motor, Dynamo, Transformer
SECTION I – OBJECTIVE
-
If we suspend a magnet freely, it will settle in
- East-west direction
- North-south direction
- North-east direction
- East-south direction
-
The attraction of magnetic substance by poles of a magnet is
- Minimum
- Zero
- Maximum
- None of these
-
For a given magnet
- North Pole is stronger than South Pole
- Both poles are of equal strength
- South Pole is stronger than North Pole
- None of these
-
An example of natural magnet is
- Iron
- Steel
- Lodestone
- None of these
-
The magnetic lines of force due to a bar magnet are
- Continuous and intersecting
- Discontinuous and non-intersecting
- Continuous and non-intersecting
- Continuous and crowded at the middle of the magnet
-
An electric motor converts:
- Potential energy into kinetic energy
- Kinetic energy into electrical energy
- Electrical energy into mechanical energy
- Potential energy into mechanical energy
-
The primary coil of a transformer:
- Is connected to an A.C. source
- Connected to a D.C. source
- Converts A.C. into D.C.
- None of these
-
Space around a magnet where its influence is felt is called as
- Electric field
- Magnetic field
- Battle field
- NOT
-
A device to step up or step down a.c. voltage
- Electric motor
- Dynamo
- Transformer
- NOT
-
Which of the following represents a magnetic material?
- Aluminium
- Copper
- Silver
- Cobalt
SECTION II - SUBJECTIVE
- What are the important uses of magnet?
- Give the properties of magnet lines of force.
-
Write short note on :
- An electromagnet
- a dynamo
- Name two factors on which the strength of magnetic field of an electromagnet depends.
- By drawing a labeled diagram of an electric bell, explain its working.
Solutions: to worksheet-9 Topic- Magnetism & Electromagnetism
Objective Problems:
1. (B) | 2. (C) | 3. (B) | 4. (c) | 5. (c) | 6. (C) | 7. (A) | 8. (B) | 9. (C) | 10. (D) |
Related Link
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