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प्रश्न
What is a solenoid? Draw a sketch to show the magnetic field pattern produced by a current-carrying solenoid.
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उत्तर
Solenoid:
A solenoid is a long coil that contains large number of close turns of insulated copper wire.
The magnetic field pattern produced by a current-carrying solenoid is similar to the magnetic field produced by a bar magnet.
APPEARS IN
संबंधित प्रश्न
State Fleming’s left-hand rule.
State whether the following statement is true or false
The field at the centre of a long circular coil carrying current will be parallel straight lines.
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
Fill in the following blank with suitable words:
For a current-carrying solenoid, the magnetic field is like that of a ...........
Describe how you will locate a current-carrying wire concealed in a wall.
Draw the magnetic lines of force due to a circular wire carrying current.
State and explain the Clock face rule for determining the polarities of a circular wire carrying current.
List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?
A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in Figure below:
The force on the wire due to the magnet is directed:
fron N to S
from S to N
vertically downwards
vertically upwards
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?
Which way does the wire in the diagram below tend to move?
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:
a current is passed through coil B by plugging the key?
Explain your answer mentioning the name of the phenomenon involved.
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 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.
The strength of magnetic field around a current-carrying conductor is ____________.
The direction of force on a current carrying conductor in a magnetic field is given by ____________.
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.
