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CBSE NOTES ⇒ Class 10th ⇒ Science ⇒ 13. Magnetic Effects of Electric Current

13. Magnetic Effects of Electric Current

Electro Magnetic induction

Electro Magnetic Induction: The process, by which a changing magnetic field in a conductor induces a current in another conductor, is called electromagnetic induction.

  • The discovery of electromagnetic induction was by made Michael Faraday.
  • The induced current is found to be the highest when the direction of motion of the coil is at right angles to the magnetic field.

Using of a moving magnet can be produced/induced electric current by this discovery of Faradey.


Inducing Electric current: 

When we place a moving magnet inside a coil, there produces electric current in the coil's circuit. which can be shown in Galvanometer by deflection of it's needle. The motion of magnet with respect to coil induces a induced potential difference, due to which flows induced electric current in circuit.  

The method to induce electric current in a coil:

(i) we can induce current in a coil either by moving it in a magnetic field. 

(ii) By changing the magnetic field around it.

Which is convenient : 

It is convenient in most situations to move the coil in a magnetic field.

The method to know the direction of such induced current is called "Fleming's Right-hand Rule". 

Galvanometer : Galvanometer is a device which is used to detect induced electric current in a circuit. 


Fleming's Right-hand Rule : According to this rule

"Stretch the thumb, forefinger and middle finger of right hand so that
they are perpendicular to each other, If the forefinger indicates the direction of the magnetic field and the thumb shows the direction of motion of conductor, then the middle finger will show the direction of induced current. This simple rule is called Fleming’s right-hand rule.".


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Study Materials List:

CBSE NOTES ⇒ Class 10th ⇒ Science
1. Chemical Reactions and Equations
2. Acids, Bases and Salts
3. Metals and Non-metals
4. Carbon and its Compounds
5. Periodic Classification of Elements
6. Life Processes
7. Control and Coordination
8. How do Organisms Reproduce
9. Heredity and Evolution
10. Light-Reflection and Refraction
11. Human Eye and Colourful World
12. Electricity
13. Magnetic Effects of Electric Current
14. Sources of Energy
15. Our Environment
16. Management of Natural Resources

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