MEDIUM
12th Jharkhand Board
IMPORTANT
Earn 100

Derive an expression for the self-inductance of a long solenoid carrying current.

Important Questions on Moving Charges and Magnetism

HARD
12th Jharkhand Board
IMPORTANT
Describe with principle, the construction and working of a moving coil galvanometer.
HARD
12th Jharkhand Board
IMPORTANT
State Ampere's circuital law. Using this law find the magnetic field at a point inside a current carrying toroid. Hence, find magnetic field at a point inside a long solenoid carrying current.
MEDIUM
12th Jharkhand Board
IMPORTANT
A proton enters a uniform magnetic field of 5 T with velocity 4×107 m s-1 at right angles to the field. The magnetic force acting on the proton is(charge on a proton =1.6×10-19 C).
MEDIUM
12th Jharkhand Board
IMPORTANT
Derive an expression for the magnetic field at a point on the axis of a current carrying circular coil. Also find the magnetic field at the centre of the coil.
HARD
12th Jharkhand Board
IMPORTANT
Find the force acting on a current carrying conductor in uniform magnetic field. Using it find the force between two parallel current carrying conductors.
EASY
12th Jharkhand Board
IMPORTANT
Two long parallel wires each carrying a current of 1 A in the same direction, are placed 1 m apart. The force of attraction between them is.
HARD
12th Jharkhand Board
IMPORTANT
With the help of a diagram describe the principle, construction and working of a cyclotron.
HARD
12th Jharkhand Board
IMPORTANT
Derive an expression for the torque acting on a current carrying rectangular coil placed in a uniform magnetic field.