What is a solenoid? Draw a diagram with a solenoid connected in a circuit. How can you increase the strength of a solenoid?

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Solution

The solenoid is a long cylindrical coil of wire consisting of a large number of turns bound together very tightly.
The length of the coil should be longer than its diameter.
Magnetic field around a current carrying solenoid is shown in figure. These appear to be similar to that of a bar magnet.

When soft iron rod is placed inside the solenoid, it behaves like an electromagnet. The use of soft iron as core in the solenoid produces the strong magnetism.

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Similar questions

Q. How can you increase the magnetic strength of a solenoid?

Q. The strength of a magnetic field due to a solenoid can be increased by

(a) increasing the number of turns in the solenoid
(b) increasing the current in the solenoid
(c) winding the solenoid around a magnetic material
(d) all of these

How placing an iron core in a solenoid can increase the strength of an electromagnet?

(a) What is a solenoid ? Draw a sketch to show the magnetic field pattern produced by a current-carrying solenoid.

(b) Name the type of magnet with which the magnetic field pattern of a carrent-carrying solenoid resembles.

(c) What is the shape of field lines inside a current-carrying solenoind ? What does the pattern of field lines inside a current-carrying solenoid indicate ?

(d) List three ways in which the magnetic field strength of a current-carrying solenoid can be increased ?

(e) What type of core should be put inside a current-carrying solenoid to make it into an electromagnet ?

Which of the following can result in the increase in the strength of a solenoid?

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