A point charge q2°-32 C is fixed at the origin of a co-ordinate system as shown.

Question

A point charge q2°-32 C is fixed at the origin of a co-ordinate system as shown. Another point charge q1--0.5 uC is is initially located at point P, a distance d1 -9.3 cm from the origin along the x axis 1) What is PE, the change in potenial energy of charge q 1 when it is moved from point P to point R, located a distance d2 = 3.7 from the origin along the x-axis as shown? J Submit You currently have 0 submissions for this question. Only 10 submission are allowed You can make 10 more submissions for this question. 2) The charge q2 is now replaced by two charges q3 and q4 which each have a magnitude of-1.6 C, half of that of q2. The charges are located a distance a = 2.2 cm from the origin along the y-axis as shown. What is PE, the change in potential energy now if charge q1 is moved from point P to point R?

Explanation / Answer

a)

Change in potential energy

Delta U = kq1q2/r2 - kq1q2/r2

Delta U =9x0.1x1.6/3.7 - 9x0.1x1.6/9.3

Delta PE=0.234 J

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