(a) What is the electric field at location A (6 cm to the right of the center of

Question

(a) What is the electric field at location A (6 cm to the right of the center of the large sphere)? Neglect the small contribution of the polarized molecules in the plastic, because the shells are very thin and don't contain much matter.
< , , > N/C
(b) What is the electric field at location B (15 cm above the center of the small sphere)? Again, neglect the small contribution of the polarized molecules in the plastic, because the shells are very thin and don't contain much matter.
< , , > N/C
(c) What is the force on an electron placed at location B?
< , , > N

Explanation / Answer

a) the answer is 0, because electric fields don't exist in a conductor/shell.
b.)Find the Electric fields of each, then combine them
flux_L=q/_0, for large sphere

flux_L=EdA=EA, E= q/(_0A), A=(4r^2), r^2= (25/100)^2+(15/100)^2

E_L= 634.71 V/m

For the small one use the same set up except r^2= (15/100)^2

E_s= -799.271528 V/m

B)E_tot= E_L+E_s= -164.55 V/m

C)F= qE, charge of an electron =-1.6*10-19, and use the electric field from B

F= 2.63 N

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