- #1
RET80
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Homework Statement
You want to create an electric field = < 0, 3x10^4,0 > N/C at location < 0, 0, 0>.
Where would you place a proton to produce this field at the origin?
Homework Equations
1/4?? * q/r^2 = 3x10^4 N/C
(if you can't see the 1/4th part of the equation it's 1/(4(pi)(epsilon-not)) == 9.0x10^9 or just k)
The Attempt at a Solution
I moved everything over so that I can solve for r^2 and got this as my equation:
r = sqrt((9.0x10^9)(1.6x10^-19)/(3x10^4))
I ended up getting 2.19x10^-7 however its' saying it's not correct. I have it set up as a vector:
<0, 2.19x10^-7, 0>
Does it need to be negative for a proton in relation to the electric field?
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