TN Phy, Unit - 3, Magnetism And Magnetic Effects Of Electric Current

                        Welcome To




Class : XII
Subject : Physics
Unit : 3
Unit Name : Magnetism And Magnetic Effects Of Electric Current

IMPORTANT QUESTIONS



2 Marks

1. Define magnetic flux. Mention its unit.

2. State Coulomb’s inverse law in magnetism.
 
3. State Ampere’s circuital law.

4. State flemmings left hand rule.

5. How is a galvanometer converted into i)Ammeter ii) Voltmeter




3 Marks


1. Find the magnetic induction due to a long straight conductor using Ampere’s circuital
law.

2. Give an account of magnetic lorrentz force.

3. Explain how galvanometer is converted into an ammeter.

4. Explain how galvanometer is converted into an voltmeter.


5 Marks


1. Deduce the relation for the magnetic induction at a point due to an infinitely long
straight conductor carrying current.

2. Obtain an expression for the force between two long parallel current carrying conductor.

3. Obtain an expression for the force on a current carrying conductor placed in a magnetic field.



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