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Worksheet: Charge Enclosed in a Cylindrically Symmetric Region

Q1:

The electric field at 2.0 cm from the center of long copper rod of radius 1.0 cm has a magnitude 3.0 N/C and is directed outward from the axis of the rod.

What is the charge per unit length of the copper rod?

  • A 5 . 0 × 1 0 1 2 C/m
  • B 5 . 8 × 1 0 1 2 C/m
  • C 3 . 8 × 1 0 1 2 C/m
  • D 3 . 3 × 1 0 1 2 C/m
  • E 2 . 3 × 1 0 1 2 C/m

What would be the electric flux through a cube of side 5.0 cm situated such that the rod passes through opposite sides of the cube perpendicularly?

  • A 0.019 N⋅m2/C
  • B 0.012 N⋅m2/C
  • C 0.022 N⋅m2/C
  • D 0.027 N⋅m2/C
  • E 0.0090 N⋅m2/C