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प्रश्न
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
उत्तर
will increase
If a soft iron bar is inserted inside a current-carrying solenoid, the magnetic field inside the solenoid will increase.
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संबंधित प्रश्न
The magnetic field in a given region is uniform. Draw a diagram to represent it.
Name the rule for finding the direction of magnetic field produced by a straight current-carrying conductor.
List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?
State two ways to increase the force on a current-carrying conductor in a magnetic field.
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
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be maximum.
The strength of magnetic field around a current-carrying conductor is ____________.
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 copper conductor is placed over two stretched copper wires whose ends ate connected to a D.C. supply as shown in the diagram.
- What should be the magnetic poles at the points A and B lying on either side of the conductor to experience the force in the upward direction?
- Name the law used to find these polarities.
