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Author Question: The y-component of the electric field of an electromagnetic wave traveling in the +x direction ... (Read 40 times)

stevenposner

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on: Jul 29, 2018
The y-component of the electric field of an electromagnetic wave traveling in the +x direction through vacuum obeys the equation Ey = (375 N/C) coskx - (2.20  1014 rad/s)t. (c = 3.0 x 108 m/s)
 
  (a) What is the largest that the x-component of the wave can be?
  (b) What is the largest that the z-component of the wave can be?

Question 2

A cylindrical wire of radius 2.0 mm carries a current of 2.5 A. The potential difference between points on the wire that are 46 m apart is 3.7 V.
 
  (a) What is the electric field in the wire? (b) What is the resistivity of the material of which the wire is made?


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Yixagurpuldink

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

(a) zero (b) 1.25 T

Answer to Question 2

a) 0.080 V/m
b) 4.0  10-7   m


stevenposner

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Reply 2 on: Jul 29, 2018
Excellent

Dominic

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

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