Advertisements
Advertisements
प्रश्न
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
उत्तर
- When plane of a coil is parallel to the magnetic field.
- When plane of coil is normal to the magnetic field.
APPEARS IN
संबंधित प्रश्न
Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles
A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:
(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same
In a statement of Fleming's left-hand rule, what do the following represent?
(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.
Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if:
the current is stopped by removing the plug from the key?
Explain your answer mentioning the name of the phenomenon involved.
Name three factors on which the magnitude of force on a current carrying conductor placed in a magnetic field depends and state how does the force depend on the factors stated by you.
State two ways to increase the speed of rotation of a D.C. motor.
Write Fleming’s left hand rule.
The strength of magnetic field around a current-carrying conductor is ____________.
When current is parallel to a magnetic field, then force experience by the current-carrying conductor placed in a uniform magnetic field is ____________.
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
