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प्रश्न
What concealed do you get from the observation that a current-carrying wire deflects a compass needle placed near it?
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उत्तर
The deflection of compass needle by a current-carrying wire shows that the wire produces a magnetic field around it.
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संबंधित प्रश्न
The magnetic field in a given region is uniform. Draw a diagram to represent it.
State the form of magnetic field lines around a straight current-carrying conductor.
Draw a sketch to show the magnetic lines of force due to a current-carrying straight 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?
List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?
A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:
(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same
Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if:
the current is stopped by removing the plug from the key?
Explain your answer mentioning the name of the phenomenon involved.
Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.
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 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.
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:
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?
Assertion (A): A magnetic field exerts a force on a moving charge in the same direction as the direction of the field itself.
Reason (R): The direction of force is given by Fleming’s left-hand rule.
Which of the following pattern correctly describes the magnetic field around a long straight wire carrying current?
An alpha particle enters a uniform magnetic field as shown. The direction of force experienced by the alpha particle is ______.
