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प्रश्न
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
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उत्तर १
According to Fleming's left hand rule, the force exerted on a current carrying conductor placed in a magnetic field is maximum when the conductor is placed perpendicular to the magnetic field. That is, the direction of the electric current and the direction of the magnetic field are perpendicular to each other.
उत्तर २
When the direction of the current is perpendicular to the direction of the magnetic field, the force that a current-carrying conductor experiences in a magnetic field is greatest.
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संबंधित प्रश्न
State Fleming’s left-hand rule.
Which of the following correctly describes the magnetic field near a long straight wire?
State the form of magnetic field lines around a straight current-carrying conductor.
What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?
Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles
For Fleming's left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.
A horizontal wire carries a current as shown in Figure below between magnetic poles N and S:
Is the direction of the force on the wire due to the magnet:
(a) in the direction the current
(b) vertically downwards
(c) opposite to the current direction
(d) vertically upwards
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is maximum?
A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in Figure.
- In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil?
- Why is a commutator necessary for continuous rotation of the coil?
- Complete the diagram with commutator, etc. for the flow of current in the coil?
State two ways to increase the speed of rotation of a D.C. motor.
Differentiate between conductors and insulators.
State whether a magnetic field is associated or not around a static charge.
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be Zero.
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.
Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':
An alpha particle enters a uniform magnetic field as shown. The direction of force experienced by the alpha particle is ______.
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.
