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Author Question: A circular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil ... (Read 100 times)

stephzh

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on: Jul 29, 2018
A circular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil with its north pole pointing down.
 
  If the magnet is dropped from this position what is the direction of the induced current in the coil, as viewed from above? A) counterclockwise
  B) clockwise
  C) An emf but no current is induced in the coil.
  D) There is no current in the coil.

Question 2

What is the frequency of 20-mm microwaves? (c = 3.0  108 m/s)
 
  A) 100 MHz
  B) 400 MHz
  C) 15 GHz
  D) 73 GHz


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nhea

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


stephzh

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Reply #2 on: Jul 29, 2018
Thank you!


nhea

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Reply #3 on: Jul 29, 2018
Always glad to help...


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