A long straight metal rod has a radius of 2.0 mm and a surface ...

[Alygatorr01285]

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

[pratush dev]

Answer to Question 1

C

Answer to Question 2

B

[Alygatorr01285]

Gracias!

[covalentbond]

Thanks for the timely response, appreciate it