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This is part 2

Brief discussion of most important topics along with questions has been done.

CONCEPT OF MAGNETIC FIELD

The space around a magnet within which its influence can be experienced is called its magnetic field.

OERSTED'S EXPERIMENT

BIOT-SAVART LAW

Relation between µ0 ε0 and c

MAGNETIC FIELD DUE TO A LONG STRAIGHT CURRENT CARRYING
CONDUCTOR

Direction of magnetic field

Right hand thumb rule

MAGNETIC FIELD AT THE CENTRE OF CIRCULAR CURRENT LOOP

MAGNETIC FIELD ON THE AXIS OF A CIRCULAR CURRENT LOOP

AMPERE'S CIRCUITAL LAW

Ampere's circuital law states that the line integral of magnetic field 𝑩 around any closed circuit is equal to µ0 (permeability constant) times the total current I threading or passing through this closed circuit.

Application of Ampere's law to a straight conductor.

MAGNETIC FIELD INSIDE A STRAIGHT SOLENOID

FORCE ON A MOVING CHARGE IN A MAGNETIC FIELD

LORENTZ FORCE

MOTION OF A CHARGED PARTICLE IN A UNIFORM MAGNETIC FIELD

When the initial velocity is perpendicular to the magnetic field.

When the initial velocity makes an arbitrary angle with the field direction.

MOTION OF A CHARGE IN PERPENDICULAR MAGNETIC AND ELECTRIC FIELDS

FORCE ON A CURRENT CARRYING CONDUCTOR IN A MAGNETIC FIELD

FORCES BETWEEN TWO PARALLEL CURRENT CARRYING CONDUCTORS

TORQUE EXPERIENCED BY A CURRENT LOOP IN A UNIFORM MAGNETIC FIELD

MOVING COIL GALVANOMETER

Principle. A current carrying coil placed in a magnetic field experiences a current dependent torque, which tends to rotate the coil and produces angular deflection

Galvanometer constant or current reduction factor

Figure of merit of a galvanometer

SENSITIVITY OF A GALVANOMETER

Current sensitivity

Voltage sensitivity

CONVERSION OF A GALVANOMETER INTO AN AMMETER

CONVERSION OF A GALVANOMETER INTO A VOLTMETER

physics important questions for board exam 2025 from following chapters:

1. electric charge and field
2. electrostatic potential and capacitance
3. current electricity
4. moving charge and magnetism
5. magnetism and matter
6. electromagnetic induction
7. alternating current
8. electromagnetic waves
9. ray optics and optical instruments
10. wave optics
11. dual nature of radiation and matter
12. atom
13. nuclei
14. semiconductor electronics


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