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## Class 10 Physics (India)

### Course: Class 10 Physics (India)>Unit 4

Lesson 6: Electromagnetic induction

# Electromagnetic induction (& Faraday's experiments)

Let's learn how to produce electric current without batteries. We will recreate the 2 Faraday's experiments that led to it. Created by Mahesh Shenoy.

## Want to join the conversation?

• can you make a more comprehensive unit on Electromagnetic Induction?

In college and with everything being online now, Khan academy is my lifeline
• Electromagnetism is really cool. Wow.
So how do you make the magnetic field to continually change so the induced current would be continuous?
• How can we make this invention better and more effective
• could this be used on the galactic scale or even planetary?
• Hi! I have a question that builds on from . What if we move both the magnet and electric field simultaneously? Three possible ways here. Mag and coil to the right, mag and coil to the left, mag and coil away from and towards one another. What would happen in each case?
• According to what I understood, for both moving to right or left, I don't think it would generate electricity because if both the mag and coil move in the same direction, the magnetic field strength would remain the same. For both of them moving away or towards each other, I feel that would generate current since the magnetic field strength would differ.
(1 vote)
• How does a bulb glow immediately after we turn on the switch?
(1 vote)
• According to me it does glow immediately and the reason is that it is not something that reaches the bulb, they are electrons scattered in the whole wire as well as the bulb's filament, etc. so whenever you turn on turn on the switch, the electrons start flowing and as they are in the whole circuit, it does not take any time. It is like a pipe full of water and when you start water supply, the water already in the pipe starts getting out immediately.
• But in producing electricity by faraday's experiment we require third party force force hanging magnetic field.
but you share that in huge quantity we produce the electricity
today,but how can we get that much force for making the electricity ?
• Why does changing magnetic flux produce electric current anyway? What happens actually on the level of electrons?