Selina Solutions Class 9 Physics Solutions for Exercise 10B in Chapter 10 - Chapter 10 Magnetism

Question 6 Exercise 10B

A coil of insulated copper wire is wound around a piece of soft iron and current is passed in the coil from a battery. What name is given to the device so obtained? Give one use of the device mentioned by you.

Answer:

The device so obtained can be named as an electromagnet.

One application of electromagnet is as follows:

Electromagnets are used in electrical devices such as telegraph, electric bell, microphone, loud speaker etc

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Exercises

Exercise 10A

Exercise 10B

Chapters

Chapter 1 – Measurements and Experimentation

Chapter 2 Motion In One Dimension

Chapter 3 Laws Of Motion

Chapter 4 Pressure In Fluids And Atmospheric Pressure

Chapter 5 Upthrust In Fluids Archimedes Principle And Floatation

Chapter 6 Heat And Energy

Chapter 7 Reflection Of Light

Chapter 8 Propogation Of Sound Waves

Chapter 9 Current Electricity

Chapter 10 Magnetism