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Coulombs law problem

  • Thread starter torquey123
  • Start date
  • #1

Homework Statement



A charge of -4.1 microC is located at the origin and a charge of -2.98microC is located along the y axis at 2.11519 m.
The value of the Coulomb constant is 8.99x10^0.
At what point along the y-axis is the electric field zero? Answer in units of meters.



Homework Equations



E= F/q

F=kQq/r^2

The Attempt at a Solution



kq/x^2 = Q/(2.11519-x)^2

using this, and doing the math i got 1886 something...very incorrect.. Please help:confused:
 

Answers and Replies

  • #2
340
0
1. Both charges produce an electric field.
2. What will happen to a test charge placed at a position where the electric field is zero?
3. You should first intuit where the field will be zero. I.E. is it along the negative y axis, between the charges, or past the second charge along the y axis.
Hope that helps.
 

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