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Electromagnetic Induction with Solenoids and AC Current

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Electromagnetic Induction with Solenoids and AC Current

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Questions and Answers

What is the purpose of using a solenoid instead of a permanent magnet to generate an external field?

To reduce the area of the loop

To stop the current flow in the loop

To produce a constant magnetic field

To change the magnitude of the external field by varying the supplied current (correct)

What type of electric current is required to continually change the magnetic field with time?

Direct current (DC)

Static current

Pulsating current

Alternating current (AC) (correct)

What is the condition for wireless induction to occur between two solenoids?

Only one solenoid needs to be supplied with an electric current (correct)

The solenoids must be made of the same material

Both solenoids must be touching

Both solenoids must be supplied with an electric current

What is the relationship between the magnetic field and the current in the solenoid?

<p>The magnetic field is proportional to the current</p> Signup and view all the answers

What is the result of powering a solenoid with alternating current (AC)?

<p>The magnetic field continuously changes with time</p> Signup and view all the answers

Electromagnetic Induction with Solenoids and AC Current

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Podcast

Questions and Answers

What is the purpose of using a solenoid instead of a permanent magnet to generate an external field?

What type of electric current is required to continually change the magnetic field with time?

What is the condition for wireless induction to occur between two solenoids?

What is the relationship between the magnetic field and the current in the solenoid?

What is the result of powering a solenoid with alternating current (AC)?

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