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


c

Physics & Space Science

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