Question

A uniform volume charge density of 70 µC/m3 is present throughout the region 6 mm ˂...

  1. A uniform volume charge density of 70 µC/m3 is present throughout the region 6 mm ˂ r ˂ 8 mm. Let ρv = 0 for   0 ˂ r ˂ 6 mm.
  1. Find the total charge inside the spherical surface r = 8 mm.

b.Find Dr at r = 8 mm.

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Answer #1

SOLUTION;

The uniform volume charge density= 70*10-6 C/m​​​​​​3

Where  

And

a) find the total charge inside the spherical surface = Q

And r = 8 mm = 0.008 m

According to question

The total charge inside spherical surface is = 8.679*10-11 C

B) find Dr when r =8 mm = 0.008 m

We know that

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