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प्रश्न
Name the rule for finding the direction of magnetic field produced by a straight current-carrying conductor.
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उत्तर
The direction of magnetic field produced by a straight current-carrying conductor can be obtained by using Maxwell's right-hand thumb rule.
संबंधित प्रश्न
State Fleming’s left hand rule.
State whether the following statement is true or false:
The magnetic field inside a long circular coil carrying current well be parallel straight lines.
What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?
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
In the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from the position X when current flows in the coil
Is the current flowing clockwise or anticlockwise around the coil when viewed from above?
What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer.
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.
How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field?
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?
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.
Differentiate between conductors and insulators.
State whether a magnetic field is associated or not around a static charge.
When current is parallel to a magnetic field, then force experience by the current-carrying conductor placed in a uniform magnetic field is ____________.
Which of the following factors affect the strength of force experience by current-carrying conduct in a uniform magnetic field?
Describe the activity that shows that a current-carrying conductor experiences a force perpendicular to its length and the external magnetic field. How does Fleming’s left-hand rule help us to find the direction of the force acting on the current carrying conductor?
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?
What do you know about Michael Faraday?
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?
Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':
