(5%) Problem 10: Charge qi -95 nC is located at the coordinate system origin whi
ID: 3162291 • Letter: #
Question
(5%) Problem 10: Charge qi -95 nC is located at the coordinate system origin while charge q2 -0.82 Cis located at (a ,0), where a m 0.75 m. The point Phas yA coordinates (a, b), wbere b 035 m. A third charge q3 195 nC will be placed later (a,b) Otheexpertta.com 33% Part (a) Find the electric potential vP at point P in volts. Assume the potential is zero at infinity. es, would you have to do to bring the third charge, 13.from very far away to the point P? 33% Part (c) What is the total potential energy U.in joules, of the final configuration of three charges? Grade Summary Um -0.00000223 Potential 100% Submissions sinnExplanation / Answer
a) electric potential at point P = kq1/r1 + kq2 / r2
EP = 9*10^9 * 10^-9*(-9.5 / sqrt(0.75^2 + 0.35^2) - 0.82 / 0.35)
= -124.4 V
b) work done = q3 * V
= 19.5*10^-9 * 124.4 = 2.42*10^-6 J
c) total potential energy = kq1q2 / r1 + kq2q3 / r2 + kq3q1 / r3
= 9*10^9*10^-18 *( - 9.5*-0.82 / 0.75 + (-0.82)*(19.5) / 0.35 + 19.5*(-9.5) / sqrt(0.75^2+ 0.35^2))
= -2.33*10^-6 J
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.