Electrostatics Question 496

Question: Infinite charges of magnitude q each are lying at x =1, 2, 4, 8… meter on X-axis. The value of intensity of electric field at point x = 0 due to these charges will be [J & K CET 2004]

Options:

A) 12×109qN/C

B) Zero

C) 6x 109q N/C

D) 4x 109q N/C

Show Answer

Answer:

Correct Answer: A

Solution:

Net field at origin E=q4πε0[112+122+142+.]

=q4πε0[1+14+116+..]

=q4πε0[1114]=12×109qN/C



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