Advertisements
Advertisements
प्रश्न
Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field.
उत्तर
Electric motor is a device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field.
APPEARS IN
संबंधित प्रश्न
What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?
Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles
The magnetic field lines in the middle of the current-carrying solenoid are?
(a) circles
(b) spirals
(c) parallel to the axis of the tube
(d) perpendicular to the axis of the tube
What happens when a current-carrying conductor is placed in a magnetic field?
State two ways to increase the force on a current-carrying conductor in a magnetic field.
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.
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?
The strength of magnetic field around a current-carrying conductor is ____________.
Assertion (A): A magnetic field exerts a force on a moving charge in the same direction as the direction of the field itself.
Reason (R): The direction of force is given by Fleming’s left-hand rule.
A copper conductor is placed over two stretched copper wires whose ends ate connected to a D.C. supply as shown in the diagram.
- What should be the magnetic poles at the points A and B lying on either side of the conductor to experience the force in the upward direction?
- Name the law used to find these polarities.
