Text: Two charged particles are placed along the x-axis.
The first particle has a charge q1 = +q and is at the origin. The second has a charge q2 = -2q and is at x = d = 8.40 cm.
(a) Determine the finite value of x (in cm) where the electric field is zero.
At the point of interest, the electric field due to the two charges has the same magnitude and opposite direction. Qualitatively determine where along the x-axis the electric fields will be in the opposite direction. Write expressions for the electric field due to each charge at this location, equate these expressions, and solve for this location. (in cm)
(b) Determine the smallest and largest finite values of x (in cm) where the electric potential is zero. (Note: Assume a reference level of potential V = 0 at r = ∞.)
Smallest value (cm) Largest value (cm)