Homework Statement
The electric field between the plates of the velocity selector in a Bainbridge mass spectrometer is 1.05 105 V/m, and the magnetic field in both regions is 0.520 T. A stream of singly charged selenium ions moves in a circular path with a radius of 31.0 cm in the magnetic...
Homework Statement
A total electric charge of 2.00 nC is distributed uniformly over the surface of a metal sphere with a radius of 20.0 cm. If the potential is zero at a point at infinity, find the value of the potential at the following distances from the center of the sphere.
(a) 48.0 cm...
(1)I think so, the electric field inside the sphere is (kQr)/R^3
(2)E= sigma/(2epsilon_0)
(3)sigma/(2epsilon_0)+(kQr)/R^3=0?
got it, thank you so much!
Homework Statement
An insulating sphere with radius 0.120 m has 0.750 nC of charge uniformly distributed throughout its volume. The center of the sphere is 0.240 m above a large uniform sheet that has charge density -9.40 nC/m2. Find all points inside the sphere where the electric field is...