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Author Question: A long straight metal rod has a radius of 2.0 mm and a surface charge of density 0.40 nC/m2 . ... (Read 112 times)

Alygatorr01285

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on: Jul 28, 2018
A long straight metal rod has a radius of 2.0 mm and a surface charge of density 0.40 nC/m2 . Determine the magnitude of the electric field 3.0 mm from the axis.
 a. 18 N/C
  b. 23 N/C
  c. 30 N/C
  d. 15 N/C
  e. 60 N/C

Question 2

The axis of a long hollow metallic cylinder (inner radius = 1.0 cm, outer radius = 2.0 cm) coincides with a long wire. The wire has a linear charge density of -8.0 pC/m, and the cylinder has a net charge per unit length of -4.0 pC/m. Determine the magnitude of the electric field 3.0 cm from the axis.
 a. 5.4 N/C
  b. 7.2 N/C
  c. 4.3 N/C
  d. 3.6 N/C
  e. 2.4 N/C


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pratush dev

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


Alygatorr01285

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  • Posts: 564
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

Joy Chen

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Reply 3 on: Yesterday
Wow, this really help

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