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प्रश्न
Name and state the rule to determine the direction of magnetic field around a straight current-carrying conductor.
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उत्तर
Maxwell’s right-hand thumb rule is used to determine the direction of magnetic field around a straight current-carrying conductor.
According to this rule, if we grasp a current-carrying wire in our right hand so that our thumb points in the direction of the current, the direction in which our fingers encircle the wire will give the direction of magnetic field lines around the wire.
When thumb points upwards, the curled fingers are anticlockwise. So, the direction of magnetic field lines is anticlockwise.
When thumb points downwards, the curled fingers are clockwise. So, the direction of magnetic field lines is clockwise.
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संबंधित प्रश्न
Fill in the following blank with suitable words:
For a current-carrying solenoid, the magnetic field is like that of a ...........
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?
What is the shape of field lines inside a current-carrying solenoid? What does the pattern of field lines inside a current-carrying solenoid indicate?
The magnetic field lines in the middle of the current-carrying solenoid are?
(a) circles
(b) spirals
(c) parallel to the axis of the tube
(d) perpendicular to the axis of the tube
In a statement of Fleming's left-hand rule, what do the following represent?
(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.
A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.
State Fleming's left-hand rule. Explain it with the help of labelled diagrams.
Which way does the wire in the diagram below tend to move?
A flat coil ABCD is freely suspended between the pole of U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
What happens when a current is passed in the coil?
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?
The following diagram shows two parallel straight conductors carrying the same current. Copy the diagram and draw the pattern of the magnetic field lines around them showing their directions. What is the magnitude of the magnetic field at a point 'X' which is equidistant from the conductors? Give justification for your answer.
State whether a magnetic field is associated or not around a static charge.
State whether a magnetic field is associated or not around a moving charge.
The north pole of Earth’s magnet is in the ____________.
The shape of the magnetic field lines produced by a current-carrying conductor is ____________.
For a current in a long straight solenoid N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is
What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from Fleming’s left-hand rule?
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?
Which of the following pattern correctly describes the magnetic field around a long straight wire carrying current?
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
