Statement I: An emf is induced in a long solenoid by a bar magnet that moves while totally inside it along the solenoid axis. Statement II: As the magnet moves inside the solenoid the flux through individual turns of the solenoid changes.

Question

Statement I: An emf is induced in a long solenoid by a bar magnet that moves while totally inside it along the solenoid axis. Statement II: As the magnet moves inside the solenoid the flux through individual turns of the solenoid changes. (A) If both statements are true and statement II is the correct explanation of statement I. (B) If both statements are true but statement II is not the correct explanation of statement I. (C) If statement I is true but statement II is false. (D) If statement I is false but statement II is true.

Tardigrade Admin · Accepted Answer

Even though flux through individual lines changes, it remains unchanged for the solenoid as a whole. Therefore no emf is induced in the long solenoid.

Q. Statement I: An emf is induced in a long solenoid by a bar magnet that moves while totally inside it along the solenoid axis. Statement II: As the magnet moves inside the solenoid the flux through individual turns of the solenoid changes.

If both statements are true and statement II is the correct explanation of statement I.

If both statements are true but statement II is not the correct explanation of statement I.

If statement I is true but statement II is false.

If statement I is false but statement II is true.

Even though flux through individual lines changes, it remains unchanged for the solenoid as a whole. Therefore no emf is induced in the long solenoid.

Q. Statement I: An emf is induced in a long solenoid by a bar magnet that moves while totally inside it along the solenoid axis.
Statement II: As the magnet moves inside the solenoid the flux through individual turns of the solenoid changes.