I need to know how to find the magnitude the electric potential and the net electric potential

Physics
Tutor: None Selected Time limit: 1 Day

Apr 14th, 2015

The potential due to the charge Q1:

V1 = kq1 / r1 = 9.0 × 109 N·m2·C–2 × –5.4 × 10-6 C / 2.0 m = –24300 V

The potential due to the charge Q2:

V2 = kq2 / r2 = 9.0 × 109 N·m2·C–2 × 7.6 × 10-6 C / 4.0 m = +17100 V

The net potential is –24300 V + 17100 V = –7200 V


Apr 14th, 2015

Thank you, but do you know the equation for (B)

Apr 14th, 2015

To find the intensity of the electric field formed by a charge at some point, use the formula E = kq /r^2

where k = 9 * 10^9 N m^2 / C^2 is the constant, q is the charge, and r is the distance from the charge to the point.

Apr 14th, 2015

Thank you that helped a lot 

Apr 14th, 2015

You are welcome.

Apr 14th, 2015

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