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Dillion
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Homework Statement
A positive charge of 3 microCouloumbs is at the origin. A negative charge with the same magnitude is 8 m away along the x direction.
a) What are the magnitude and direction of the electric field at the points between the two charges, 2, and 4, and 6m from the positive charge?
b) What is the electric potential at each of these three points? (The reference point, where V=0 is infinitely far away).
Homework Equations
V=Ed
Electric Field = Qk/r^2
The Attempt at a Solution
a) (3*10^-6)(9*10^9)/2^2 = 6750
(3*10^-6)(9*10^9)/6^2 = 750
7500 to the right
(3*10^-6)(9*10^9)/4^2 = 3375 to the right(3*10^-6)(9*10^9)/6^2 = 750
(3*10^-6)(9*10^9)/2^2 = 6750
7500 to the right
b) V=Ed
Electric field at 2m
7500 * 2 = 15000
Electric field at 4 m
3375 * 4 = 13500
Electric field at 6 m
7500 * 6 = 45000I'm confident in A but not in b. Please help