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Author Question: The energy density of an electromagnetic wave in free space is A) entirely in the electric field. ... (Read 93 times)

V@ndy87

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The energy density of an electromagnetic wave in free space is
 
  A) entirely in the electric field.
  B) entirely in the magnetic field.
  C) 1/4 in the electric field and 3/4 in the magnetic field.
  D) 1/4 in the magnetic field and 3/4 in the electric field.
  E) equally divided between the magnetic and the electric fields.

Question 2

Four resistors having resistances of 20 , 40 , 60 , and 80  are connected in series across an ideal dc voltage source. If the current through this circuit is 0.50 A, what is the voltage of the voltage source?
 
  A) 20 V
  B) 40 V
  C) 60 V
  D) 80 V
  E) 100 V


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lkanara2

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V@ndy87

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Reply 2 on: Jul 29, 2018
Gracias!


daiying98

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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