Multiple choice

A regular hexagon with each side equaling 10 cm has a charge 5 μC at each of its vertices. Calculate the potential at the centre of the hexagon.

  1. 0.22 x 10-3 V

  2. 4.5 x 103 V

  3. 2.7 x 106 V

  4. 450 x 103 V

  5. 27 x 103 V
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Given a = 10cm = 0.10m; q =5 μC = 5 X 10-6 C .V = Kq / r Distance of centre from vertex for a regular hexagon is 10 cm. V= 6 Kq/r = 6 x 9 x109 x 5 x 10-6 /0.10 = 2.7 x 106 V  

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