Electrostatics Question 403

Question: Electric charges of +10μC, +5μC, 3μC and +8μC are placed at the corners of a square of side 2 m. the potential at the centre of the square is [KCET (Engg./Med.) 1999]

Options:

A) 1.8 V

B) 1.8×106 V

C) 1.8×105 V

D) 1.8×104 V

Show Answer

Answer:

Correct Answer: C

Solution:

Length of each side of square is so distance of it’s centre from each corner is 22=1m. Potential at the centre V=9×109[10×1061+5×10613×1061+8×1061]

=1.8×105V



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