Potential energy of two equal negative p...

Potential energy of two equal negative point charges 2mC held 1 m apart in air is

2 J

2eV

4 J

0.036 J

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Potential energy of two equal negative point charges 2muC each held 1 m apart in air is

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A point charge q_1 is held stationary at the origin. A second charge q_2 is placed at a point a, and the electric potential energy of the pair of charges is -6.4 xx 10^-8 J . When the second charge is moved to point b, the electric force on the charge does 4.2 xx 10^-8 J of work. What is the electric potential energy of the pair of charges when the second charge is at point b?

Potential Energy|Point Charge|Questions

(a) Derive and expression for the electric field at any point on the equatorial line of an electric dipole. (b) Two identical point charges, q each kept 2m apart in air. A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Find the position and nature of Q.

A point charge q_1 = 4.00 nC is placed at the origin, and a second point charge q_2 = -3.00 nC , placed on the x-axis at x = + 20.0 cm. A third point charge q_3 = 2.00 nC is placed on the X-axis between q_1, and q_2 . (Take as zero the potential energy of the three charges when they are infinitely far apart). (a) What is the potential energy of the system of the three charges if q_3 is placed at x= + 10.0 cm? (b) Where should q_3 be placed to make the potential energy of the system equal to zero?

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