Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is $8.0 \times 10^{3} N m^{2} / C$ .
(a) What is the net charge inside the box?(b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box? Why or Why not?

Question

Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is $8.0 \times 10^{3} N m^{2} / C$ .
(a) What is the net charge inside the box?(b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box? Why or Why not?

Toppr Admin · Accepted Answer

-a- q-x3F5-0-x3A6-8-85-xD7-10-x2212-12-xD7-8-xD7-103C-0-07-x3BC-C-b-xA0-xA0-No-xA0-Net flux piercing out through a body depends on the net charge contained in the body- If net flux is zero- then it can be inferred that net charge inside the body is zero- The body may have equal amount of positive and negative charges-

(a) q=ϵ0Φ=8.85×10−12×8×103C=0.07μC(b) No. Net flux piercing out through a body depends on the net charge contained in the body. If net flux is zero, then it can be inferred that net charge inside the body is zero. The body may have equal amount of positive and negative charges.