The electric field everywhere on the surface of a charged sphere of radius 0.260 m has a magnitude of 545 N/C and points radially outward from the center of the sphere.

(a) What is the net charge on the sphere?

3 answers

Use Gauss' Law.
The total flux is
4*pi*R^3 *E

Gauss' Law tells you how to relate the flux to the total charge.

Flux = Q/epsilon0

epsilon0 = 8.854*10^-12 C^2/(n*m^2)
4*pi*R^2 *E
Yes, Damon is right. Typo exponent error. Thanks for catching it, DC