# AP Class 10 Physical Science Chapter 12 Electromagnetism

The AP Class 10 Physical Science Chapter 12 Electromagnetism discuss various effects of electromagnetism and the working of electric motors and generators.

## Points to Remember in Chapter 12 Electromagnetism

• The ratio of flux passing through a plane perpendicular to the field and the area of the plane is known as the magnetic flux.
• A current carrying conductor produces a magnetic field around it.
• In an electric motor, the electric energy is converted into mechanical energy
• In an electric generator, the mechanical energy is converted into electrical energy.
• Faradayâ€™s Law – The EMF induced in a closed loop is equal to the rate of change of magnetic flux passing through it.
• Lenzâ€™s Law – The induced current set up in the coil is in a direction opposing the changes in the flux.

To better understand the concepts discussed in the chapter, let us look at a few chapter questions.

## Chapter 12 Electromagnetism Questions

1. Are the magnetic field lines closed? Explain
2. Why does the picture appear distorted when a bar magnet is brought close to the screen of a television? Explain
3. How can you verify that a current carrying wire produces a magnetic field with the help of an experiment?
4. Draw a neat diagram of an electric motor. Name the parts.
5. Give a few applications of Faradayâ€™s law of induction in daily life.

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