The figure below shows the electric field lines for two point charges separated

The figure below shows the electric field lines for two point charges separated by a small distance.

(a) Determine the ratio q1/q2. Give the value as a decimal with three significant figures.

(b) What are the signs of q1 and q2?

q1 is positive.

q1 is negative.

q2 is positive.

q2 is negative.

2 Answers

  • Because there is 18 lines coming off of it, and only 6 reaching the second charge, you go 6/18 = 1/3 or 0.333

  • a.  q1/q2=6/18  = 0.33333

     

    b. so electric field lines are away from the q2 so q2 is positive charge

    electric field lines are towards q1. so q1 is negative charge

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