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Unit: Magnetic effects of electric current

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Magnets and magnetic fields

How do magnets attract each other over a distance? What are magnetic fields? Why do we talk about these fields? We will explore all these questions in this section

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Quiz 1

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Magnetic fields due to straight wire carrying electric current

Can we get magnetic fields without using a magnet? Turns out a man named Oersted figured out that we can, from electric current. Let's explore more in this section.

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Quiz 2

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Magnetic field due to current carrying loops and solenoids

Electromagnets are magnets whose properties can be controlled using electricity. Let's explore how to make one.

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Quiz 3

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Force on current carrying wire in magnetic field

Current carrying wires can push on tiny magnets. So can magnets push on current carrying wires? In this section, we will explore just that.

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Quiz 4

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Electric motor

How does electric current make your fan spin? In this section we will explore the working of an electric motor.

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Quiz 5

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Electromagnetic induction

"What's the big deal?" asked a reporter when Faraday announced his great discovery. He replied, "one day our whole economy will run on this". More than 200 years later, our entire world is still powered by the same phenomenon, electromagnetic induction. In this section, we will explore this.

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Prepare for CBSE board exam

This section starts with a video summarising the chapter, which is followed by an article covering CBSE board exam questions, arranged by subtopic.

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Unit test

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About this unit

Magnets are fun and mysterious. But they can do a lot more than just push and pull each other from a distance. In this chapter, we will learn about the intimate relationship between magnets and electric currents. And we will see how we can use this relationship to build amazing things like motors and generators that have become an essential part of our lives today.