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प्रश्न
What happens when a current-carrying conductor is placed in a magnetic field?
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उत्तर
When a current-carrying conductor is placed in a magnetic field, the conductor experiences a force that makes it move.
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संबंधित प्रश्न
The magnetic field inside a long straight solenoid-carrying current ______.
What concealed do you get from the observation that a current-carrying wire deflects a compass needle placed near it?
What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?
Describe how you will locate a current-carrying wire concealed in a wall.
Name any two factors on which the strength of magnetic field produced by a current-carrying solenoid depends. How does it depend on these factors?
The front face of a circular wire carrying current behaves like a north pole. The direction of current in this face of circular wire is:
(a) clockwise
(b) downwards
(c) anticlockwise
(d) upwards
State two ways to increase the force on a current-carrying conductor in a magnetic field.
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
Which way does the wire in the diagram below tend to move?
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is zero?
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is maximum?
State Fleming’s left-hand rule.
A flat coil ABCD is freely suspended between the pole of a U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
Name an instrument which makes use of the principle stated above.
The strength of magnetic field around a current-carrying conductor is ____________.
A simple motor is made in a school laboratory. A coil of wire is mounted on an axle between the poles of a horseshoe magnet, as illustrated.
In the example above, coil ABCD is horizontal and the battery is connected as shown.
- For this position, state the direction of the force on the arm AB.
- Why does the current in the arm BC not contribute to the turning force on the coil?
A copper wire is held between the poles of a magnet
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
Assertion (A): A current carrying straight conductor experiences a force when placed perpendicular to the direction of magnetic field.
Reason (R): The net charge on a current carrying conductor is always zero.
Two LED bulbs of 10W and 5W are connected in series. If the current flowing through 5W bulb is 0.005A, the current flowing through 10W bulb 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.
