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Q.3:
Figure.1 shows a section of a long, thin-walled metal tube of radius R = 3.00 cm, with a charge per unit
length of 2 = 2.00 • 10 C/m. What is the magnitude E of the electric field at radial distance (a) r =
R/2.00 and (b)r= 2.00R? (c) Graph E versus r for the range r= 0 to 2.00R.
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