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प्रश्न
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.
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उत्तर
Experimentally, it is found that the magnitude of force acting on a current carrying conductor placed in a magnetic field in the direction perpendicular to it's length depends on the following three factors:
- The force F is directly proportional to the strength of magnetic field B, i.e., F α B
- The force F is directly proportional to the current I flowing in the wire, i.e., F α I
- The force F is directly proportional to the length L of the wire (within the magnetic field) i.e., F α L
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संबंधित प्रश्न
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.
The force exerted on a current-carrying wire placed in a magnetic field is zero when the angle between the wire and the direction of magnetic field is:
45°
60°
90°
180°
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.
When will coil come to rest?
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be maximum.
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be Zero.
Write Fleming’s left hand rule.
A magnetic field directed in north direction acts on an electron moving in east direction. The magnetic force on the electron will act ____________.
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 current-carrying conductor of a certain length, kept perpendicular to the magnetic field experiences a force F. What will be the force if the current is increased four times, the length is halved and the magnetic field is tripled?
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
