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प्रश्न
State two ways to increase the force on a current-carrying conductor in a magnetic field.
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उत्तर
The force on a current-carrying conductor in a magnetic field can be increased by increasing the flow of current in the conductor and also by increasing externally applied magnetic field.
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संबंधित प्रश्न
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State whether the following statement is true or false
The field at the centre of a long circular coil carrying current will be parallel straight lines.
State the rule to determine the direction of a force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.
What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?
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The diagram given below represents magnetic field caused by a current-carrying conductor which is:
(a) a long straight wire
(b) a circular coil
(c) a solenoid
(d) a short straight wire
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(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same
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When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
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The force on the wire due to the magnet is directed:
fron N to S
from S to N
vertically downwards
vertically upwards
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 the unit of magnetic field in terms of the force experienced by a current carrying conductor placed in a magnetic field
State two ways to increase the speed of rotation of a D.C. motor.
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When will the couple acting on the coil be
- maximum
- minimum?
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.
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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?
