Magnetic Effect of Current Theoretical Important Questions in Physics for Class-XII Pdf Download
Chapter 4: Moving Charges And Magnetism
- Concepts of magnetic field
- Operated’s Experiment
- Biot- Savart Law and its applications.
- Ampere’s Law and its applications to infinitely long straight wire
- Straight and toroidal solenoids.
- Force on a moving Charge in uniform magnetic and electric field.
- Cyclotron
- Force on a current Carrying Conductor in a uniform magnetic field.
- Force between two parallel current Carrying Conductor
- Definition Of Ampere.
- Torque experienced by a current loop In uniform magnetic field.
- Moving coil galvanometer- its current sensitivity and conversion to ammeter and voltmeter.
Magnetic Effect of Current:
1. State Biot- Savart law and apply it to find the magnetic field due to a circular loop
carrying current at a point (a) at its Centre (b) on the axis
2. State Ampere's circuital law and apply it to find the magnetic field (a) inside a current
carrying solenoid (b) inside a current carrying toroid
3. Apply Ampere's circuital law to determine the magnetic field at a point due to a long
straight current carrying conductor.
4. Derive an expression for the force on a current carrying conductor in a uniform magnetic
field
5. Derive an expression for the force between long straight conductors carrying current
and hence define 1 ampere.
6. Derive an expression for the torque on a current carrying loop in a uniform magnetic
field.
7. Describe the principle construction and working of a Moving coil galvanometer.
8. Describe the conversion of a moving coil galvanometer into (a) Ammeter (b) Voltmeter
9. What is radial magnetic field? What is its importance in a moving coil galvanometer?
How is a radial magnetic field realized in moving coil galvanometers?
10. Describe the principle construction and working of a cyclotron. Explain why an electron
cannot be accelerated using a cyclotron.
11. Describe the motion of a charged particle in a magnetic field when it enters the field (a)
perpendicular to the field lines (b) obliquely making and angle Ɵ with the field lines
12. Derive an expression for the magnetic dipole moment of a revolving electron and hence
13. define Bohr’s magneton.
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