Advertisements
Advertisements
Question
A flat coil ABCD is freely suspended between the pole pieces of a U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
When will the couple acting on the coil be
- maximum
- minimum?
Advertisements
Solution
- When plane of a coil is parallel to the magnetic field.
- When plane of coil is normal to the magnetic field.
APPEARS IN
RELATED QUESTIONS
State the form of magnetic field lines around a straight current-carrying conductor.
State and explain the Clock face rule for determining the polarities of a circular wire carrying current.
The diagram given below represents magnetic field caused by a current-carrying conductor which is:
(a) a long straight wire
(b) a circular coil
(c) a solenoid
(d) a short straight wire
A current-carrying conductor is held in exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should passed in the conductor:
(a) from top towards bottom
(b) from left towards right
(c) from bottom towards top
(d) from right towards left
How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field?
State Fleming’s left-hand rule.
The north pole of Earth’s magnet is in the ____________.
A magnetic field directed in north direction acts on an electron moving in east direction. The magnetic force on the electron will act ____________.
The direction of force on a current carrying conductor in a magnetic field is given by ____________.
Describe the activity that shows that a current-carrying conductor experiences a force perpendicular to its length and the external magnetic field. How does Fleming’s left-hand rule help us to find the direction of the force acting on the current carrying conductor?
