A point particle has a charge equal to +1.90 C and isfixed at the origin. (a) Wh

Question

A point particle has a charge equal to +1.90 C and isfixed at the origin. (a) What is the electric potential Vat a point 4.60 m from the origin assumingthat V = 0 at infinity?
Enter anumber. kV

(b) How much work must be done to bring a second point particlethat has a charge of +2.80 C from the infinity to a distance of4.60 m from the +1.90-Ccharge?
Enter anumber. mJ (a) What is the electric potential Vat a point 4.60 m from the origin assumingthat V = 0 at infinity?
Enter anumber. kV

(b) How much work must be done to bring a second point particlethat has a charge of +2.80 C from the infinity to a distance of4.60 m from the +1.90-Ccharge?
Enter anumber. mJ Enter anumber. Enter anumber.

Explanation / Answer

a) V = kq/r = (8.99x10^9 x 1.9x10^-6C) / (4.6 m)                     = 3713 V   = 3.713 kV b) W = qV = (3713 V)(2.8x10^-6 C) =.01039 J = 10.39 mJ

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