MEDIUM
12th ICSE
IMPORTANT
Earn 100

State Ampere’s circuital law.

Important Questions on Moving Charges and Magnetic Field

EASY
12th ICSE
IMPORTANT

What happens if a bar-magnet is cut into two pieces perpendicular to its length?

EASY
12th ICSE
IMPORTANT

What happens if a bar-magnet is cut into two pieces along its length ?

MEDIUM
12th ICSE
IMPORTANT
Must every magnetic field configuration necessarily have a north pole and a south pole. What about the magnetic field of a toroid?
MEDIUM
12th ICSE
IMPORTANT
Write the formula for the force on a charge q moving with velocity vin a uniform magnetic field B. What is the magnitude of this force? When is it zero?
MEDIUM
12th ICSE
IMPORTANT
An electron-beam is deflected in a given field. How will you detect whether the given field is a uniform magnetic field or a uniform electric field?
MEDIUM
12th ICSE
IMPORTANT
What is a solenoid? Draw the lines of force around it.
MEDIUM
12th ICSE
IMPORTANT
Write an expression for the magnetic field at axial points inside a long current-carrying solenoid and at one end.
HARD
12th ICSE
IMPORTANT
A current I= 1.5 A is flowing through a long solenoid of 500 turns. What is the magnetic force on an electron moving with a velocity of 2.0 x 106m s-1, along the axis of the solenoid, when it is in the middle?