The next figure shows, in cross section, a plastic, spherical shell with uniform charge Q = −16e and radius R = 10 cm.?

A particle with charge q = +5e is at the center. We want the electric field (magnitude and direction) at (a) point P1 at radial distance r1 = 6.00 cm and (b) point P2 at radial distance r2 = 12.0 cm. To find the field at point P1 at radial distance r1, we center a Gaussian sphere on the particle and with P1 on its... show more A particle with charge q = +5e is at the center. We want the electric field (magnitude and direction) at (a) point P1 at radial distance r1 = 6.00 cm and (b) point P2 at radial distance r2 = 12.0 cm.

To find the field at point P1 at radial distance r1, we center a Gaussian sphere on the particle and with P1 on its surface.


Q: in terms of r1, what is the area ∫dA of the Gaussian sphere?


Q2: What, then, is the value of the field magnitude E at radial distance r1= 6.00 cm due to the charged particle?
E= ___ N/C
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