Advertisements
Advertisements
Question
What is a solenoid? Draw a sketch to show the magnetic field pattern produced by a current-carrying solenoid.
Advertisements
Solution
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
RELATED QUESTIONS
Observe the following figure:
If the current in the coil A is changed, will some current be induced in the coil B? Explain.
State the form of magnetic field lines around a straight current-carrying conductor.
Fill in the following blank with suitable words:
For a current-carrying solenoid, the magnetic field is like that of a ...........
List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?
What type of core should be put inside a current-carrying solenoid to make an electromagnet?
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.
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 three factors on which the magnitude of force on a current carrying conductor placed in a magnetic field depends and state how does the force depend on the factors stated by you.
A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in Figure.
- In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil?
- Why is a commutator necessary for continuous rotation of the coil?
- Complete the diagram with commutator, etc. for the flow of current in the coil?
Name and state the rule of determine the direction of force experienced by a current carrying straight conductor placed in a uniform magnetic field which is perpendicular to it.
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?
Write Fleming’s left hand rule.
The north pole of Earth’s magnet is in the ____________.
The shape of the magnetic field lines produced by a current-carrying conductor is ____________.
A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in the figure below:
The force on the wire due to the magnet is directed ____________.
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 ____________.
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 do you know about Michael Faraday?
A copper wire is held between the poles of a magnet
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
