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Author Question: The coil of a generator rotates through one complete turn in a uniform magnetic field 50. times ... (Read 115 times)

student77

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on: Jul 27, 2018
The coil of a generator rotates through one complete turn in a uniform magnetic field 50. times every second. When this generator is connected to an external load, the current through the load reverses directions
 
  A) 25 times every second.
  B) 100 times every second.
  C) 75 times every second.
  D) 50 times every second.
  E) 200 times every second.

Question 2

The human eye can just detect green light of wavelength 500. nm, which arrives at the retina at the rate of 2  10-18 W. How many photons arrive each second?
 
  What will be an ideal response?


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at

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

5.


student77

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Reply #2 on: Jul 27, 2018
TY


at

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Reply #3 on: Jul 27, 2018
You're welcome


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