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Chapter 23: Q23.4-11CQ (page 858)

Explain why magnetic damping might not be effective on an object made of several thin conducting layers separated by insulation.

Short Answer

Expert verified

Damping does not affect insulating sections and has a much-reduced effect on conducting parts due to the insulation between them, reducing the size and magnitude of the current loops.

Step by step solution

01

Definition of magnetic damping

When a magnetic field travels a certain distance through or past an electrical conductor, it causes magnetic damping.

02

Explanation of why magnetic damping might not be effective on an object made of several thin conducting layers separated by insulation

When there is enough induced current to counteract the motion of the conducting material, magnetic damping works.

If the conducting materials are separated by an insulator, the current will be insufficient to dampen the vibrations, and so the damping will be ineffective.

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Most popular questions from this chapter

(a) Calculate the self-inductance of a \({\rm{50}}{\rm{.0}}\)cm long, \({\rm{10}}{\rm{.0}}\)cm diameter solenoid having \({\rm{1000}}\) loops. (b) How much energy is stored in this inductor when \({\rm{20}}{\rm{.0}}\) A of current flows through it? (c) How fast can it be turned off if the induced emf cannot exceed \({\rm{3}}{\rm{.00}}\)V?

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