Class 12 Physics

A Galvanometer Has a Resistance of 25 Ω and Indicates Full‑Scale Deflection When a Current of 4 mA Flows Through It.

State Coulomb’s Law of Magnetism.

full scale deflection in moving coil galvanometer

A Bar Magnet 4 cm Long Is Kept in the Magnetic Meridian with Its North Pole Pointing North.

An Electron Has Velocity of 4×10⁶ m/s and Moves in a Circular Orbit in a Magnetic Field of Flux Density 0.6 T. What will be the radius of the orbit?

Magnetic Lines of Force Do Not Intersect Each Other – Why?

Distinguish Between Magnetic Lines of Force and Electric Lines of Force

Write the Properties of Magnetic Lines of Force.

A Bar Magnet Has a Magnetic Moment of 0.16 A·m² – Calculate Magnetic Intensity at 45 cm from Center of magnet.

Prove that 1 amu = 931 MeV.