Using Ampere's circuital law, obtaiin the expression for themagnetic field due to a long solneoid at a point inside the solenoid on its axis. (b) In what respect different from a solenoid? Draw and compare the pattern of the magnetic field lines in the two cases. (c )How is the magnetic field inside a given solenoid made strong?

Using Ampere's circuital law, obtaiin the expression for themagnetic f

1.	Using Ampere's circuital law, obtaiin the expression for themagnetic field due to a long solneoid at a point inside the solenoid on its axis. (b) In what respect different from a solenoid? Draw and compare the pattern of the magnetic field lines in the two cases. (c )How is the magnetic field inside a given solenoid made strong?
Answer» Solution :(a) See, Q.14, 2008 O.D Set-I (b) Solenoid CONSISTS of a lonw wire wound in the form of a helix where the neighbouring TURNS are closely spaced, whereas, the toroid is a hollow circular ring on which a large number of turns of a wire is closely wound. (c )Increasing the CURRENT PASSING through the solenoid.

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