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प्रश्न
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.
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उत्तर
Fleming's Left-Hand Rule, also known as the Motor Rule, states that the thumb, first finger, and middle finger of the left hand should all be extended such that they are perpendicular to one another. The thumb indicates the direction of the conductor's motion (i.e., the direction of force acting on the conductor) if the first (fore) finger points in the direction of the magnetic field, the middle finger points in the direction of current, and so on.
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संबंधित प्रश्न
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.
Observe the following figure:
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State qualitatively the effect of inserting an iron core into a current-carrying solenoid.
State the form of magnetic field lines around a straight current-carrying conductor.
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
The magnetic field associated with a current-carrying straight conductor is in anticlockwise direction. If the conductor was held along the east-west direction, what will be the direction of current through it? Name and state the rule applied to determine the direction of current?
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°
force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is zero?
State the unit of magnetic field in terms of the force experienced by a current carrying conductor placed in a magnetic field
i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine
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.
Which of the following factors affect the strength of force experience by current-carrying conduct in a uniform magnetic field?
A magnetic field directed in north direction acts on an electron moving in east direction. The magnetic force on the electron will act ____________.
The diagram below shows a free conductor AB is kept in a magnetic field and is carrying current from A to B. (To avoid confusion complete path of the circuit is not shown) The direction of the force experienced by the conductor will be:
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 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?
