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Author Question: Consider point charges of +Q and +4Q, which are separated by 3 m. At what point, on a line between ... (Read 217 times)

V@ndy87

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on: Jul 27, 2018
Consider point charges of +Q and +4Q, which are separated by 3 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?
 
  A) 3/5 m from the +Q charge
  B) 1 m from the +Q charge
  C) 1 m from the +4 charge
  D) 3 m from the +4 charge
  E) There is no such point possible.

Question 2

A heavy bus bar is 20. cm long and of rectangular cross-section, 1.0 cm  2.0 cm. What is the voltage drop along its length when it carries 4000. A? (The resistivity of copper is 1.69  10-8 -m.)
 
  What will be an ideal response?


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Sassygurl126

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

B

Answer to Question 2

0.068 V


V@ndy87

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

ttt030911

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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