Question

cylindrical shell of radius 7.00 cm and length 250 cm has its charge uniformly distributed on its curved surface. The magnitude of the electric field at a point 16.0 cm radially outward from its axis (measured from the midpoint of the shell) is 36.0 kN/C.

(a) Use approximate relationships to find the net charge on the shell.
  
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. nC

(b) Use approximate relationships to find the electric field at a point 4.00 cm from the axis, measured radially outward from the midpoint of the shell.

Answer 1

Solution,

A)

E x 2 pi x r h = Q/e0

Charge, Q = (36000 x 2 pi x 0.16 x 2.5)/(4 pi x 9 x 10^9)

Q = 8 x 10^-7 C

Q = 800 nC

B)

E = 0,

Electric field inside conductor is zero

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