QUIZ-Chapter 24: GAUSS LAW Calculate the net electric flux through the hull of a

Question

QUIZ-Chapter 24: GAUSS LAW Calculate the net electric flux through the hull of a submarine. if the following charges are located inside it: 5.00 ?.-9.00 ?0.-27.0 C. and 84o,C. while charges located outside it are: 3.00 ?C, and-I 2.0 12) Answer A hollow sphere made of an insulating material has a uniform distribution of 5 mC charge on it (no charge in the holow space). The inner radius 40 cm, outer radius-60 cm, calculate the electric ?eld at points that are at (all distances are from the center of the sphere): 2. (2+4+2+2-10) R1 30.0 cm R2 50 cm R3 60 cm R4 100 cm Answers: 60

Explanation / Answer

Q1.

Net electric flux through a gaussian loop is given by:

electric flux = phi = Qnet/e0

e0 = 8.85*10^-12

Qnet = Net charge inside the surface/loop

Qnet = 5 - 9 - 27 + 84 = +53 uC = 53*10^-6 C

Using these values:

phi = 53*10^-6/(8.85*10^-12)

phi = 5.9887*10^6 N-m^2/C

phi = 6.0*10^6 N-m^2/C (In two significant digits)

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