UNIT : 3 Effects of electric current— ten marks questions

1. Discuss the motion of a charged articlpd or magnetifiel efine magnetic Lorentz force.

 (J - 10)

2. Explain the principle, construction,woi d i i h a neat diagram. (M - 07, 0-10, 0 -11)

3. Obtain an expression for the torque experienced by a current loop in a uniform magnetic field.

4. Obtain expression for a magnetic induction due at a point to infinitely long straight conductor carrying current. (J - 06, 0 - 09, M - 10)

5. Apply Biot — Savart law, obtain an expression for the magnetic induction at a point due to infinitely long straight conductor carrying current. (M - 06)

6. Define ampere’s circuit law. Applying it find the magnetic induction at a point due to a long solenoid carrying current. (0- 06, J -09)

7. State Joule’s law. Explain Joule’s calorimeter experiment to verify Joule’s law of heating. (J - 07, J - 12)

8. Deduce the relation for the magnetic induction, at a point along the axis of a current coil
carrying current. (0-07, M —08, M - 12)

9. State Tangent law. Explain in detail the principle, construction and theory of a tangent galvanometer. (J - 08)

10. Deduce expression for the force on a current carrying conductor placed in a magnetic field. Find the magnitude of the force. (0 - 08, M -09, J - 11, 0-12)

11. Obtain an expression for the force between two long parallel current carrying conductors. Hence define “ampere “. (M - 11)