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Chapters
2: Motion
3: Fluids
4: Electric charge and Electric current
▶ 5: Magnetism and Electromagnetism
6: Light
7: Heat
8: Sound
9: Universe
10: Matter Around Us
11: Atomic Structure
12: Periodic Classification of Elements
13: Chemical Bonding
14: Acids, Bases and Salts
15: Carbon and its Compounds
16: Applied Chemistry
17: Animal Kingdom
18: Organisation of Tissues
19: Plant Physiology
20: Organ Systems in Animals
21: Nutrition and Health
22: World of Microbes
23: Economic Biology
24: Environmental Science
25: Computer – LibreOffice Impress
![Samacheer Kalvi solutions for Science [English] Class 9 TN Board chapter 5 - Magnetism and Electromagnetism - Shaalaa.com](/images/science-english-class-9-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Science [English] Class 9 TN Board chapter 5 - Magnetism and Electromagnetism")
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Solutions for Chapter 5: Magnetism and Electromagnetism
Below listed, you can find solutions for Chapter 5 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science [English] Class 9 TN Board.
Samacheer Kalvi solutions for Science [English] Class 9 TN Board 5 Magnetism and Electromagnetism Exercise [Pages 63 - 64]
Choose the correct answer.
Which of the following converts electrical energy into mechanical energy?
Motor
Battery
Generator
Switch
Transformer works on ______.
AC only
DC only
Both AC and DC
The part of the AC generator that passes the current from the armature coil to the external circuit is ______.
field magnetsplit rings
split rings
slip rings
brushes
The unit of magnetic flux density is ______.
Weber
weber/metre
weber/meter2
weber . meter2
The SI Unit of magnetic field induction is ______.
Devices which is used to convert high alternating current to low alternating current is ______.
An electric motor converts ______.
A device for producing electric current is ______.
Match the following.
| 1. | Magnetic material | a) | Oersted |
| 2. | Non-magnetic material | b) | Iron |
| 3. | Current and magnetism | c) | Induction |
| 4. | Electromagnetic (d) Wood induction | d) | Wood |
| 5. | Electric generator | e) | Faraday |
State whether true or false. If false, correct the statement.
A generator converts mechanical energy into electrical energy.
True
False
State whether true or false. If false, correct the statement.
Magnetic field lines always repel each other and do not intersect.
True
False
State whether true or false. If false, correct the statement.
Fleming’s Left hand rule is also known as Dynamo rule.
True
False
State whether true or false. If false, correct the statement.
The speed of rotation of an electric motor can be increased by decreasing the area of the coil.
True
False
State whether true or false. If false, correct the statement.
A transformer can step up direct current.
True
False
State whether true or false. If false, correct the statement.
In a step down transformer the number of turns in primary coil is greater than that of the number of turns in the secondary coil.
True
False
Answer in brief.
State Fleming’s Left Hand Rule.
Define magnetic flux density.
List the main parts of an electric motor.
Draw and label the diagram of an AC generator.
State the advantages of ac over dc.
Differentiate step up and step down transformer.
A portable radio has a built in transformer so that it can work from the mains instead of batteries. Is this a step up or step down transformer? Give reason.
State Faraday's laws of electromagnetic induction.
Answer in detail.
Explain the principle, construction and working of a dc motor.
Explain two types of transformer.
Draw a neat diagram of an AC generator and explain its working.
Solutions for 5: Magnetism and Electromagnetism
Samacheer Kalvi solutions for Science [English] Class 9 TN Board chapter 5 - Magnetism and Electromagnetism
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Concepts covered in Science [English] Class 9 TN Board chapter 5 Magnetism and Electromagnetism are Magnet, Classification of Magnets, Magnetic Field, Properties of magnetic lines of force, Magnetic Effect of Electric Current, Force on a Current Carrying Conductor in a Magnetic Field, Force on Parallel Current Carrying Conductors, Electric Motor, Electromagnetic Induction, Faraday's Laws of Electromagnetic Induction, Alternating Current (A.C.) Generator, Direct Current Motor, Distinction Between an A.C. Generator and D.C. Motor, Types of Transformer, Transformers, Applications of Electromagnets, Electric Generator.
Using Samacheer Kalvi Science [English] Class 9 TN Board solutions Magnetism and Electromagnetism exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Science [English] Class 9 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
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