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Grifter
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Homework Statement
A very long (infinite), straight line of charge runs parallel to another very long (infinite) straight line of charge. Both lines are uniformly charged, one with +1*(lambda) and the other with -2*(lambda). The distance between them is d. Find (if any) the location(s) where the electric field is zero.
Homework Equations
[infinite wire] E = 1/(2(pi)(epsilon naught)) * (lambda)/r
[2 wires] E = (sigma1)(sigma2) / 2(epsilon naught)
sigma=area charge
lambda=line charge
epsilon naught=8.854e-12 C^2/N*m^2
The Attempt at a Solution
I drew a picture with the positively charged line with E-lines flowing away and the negatively charged line with E-lines flowing in. Between the E-lines flow from positive to negative. Not sure about the relationship between lambda and sigma or how to use an equation to find E=0 with variable charges.
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