Questions
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
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Correct option is A
Net field at origin E=q4πε0112+122+142+....∞=q4πε01+14+116+.....∞=q4πε011−14=12×109q N/CSimilar Questions
Charges q, 2q, 3q and 4q are placed at the corners A, B, C and D of a square as shown in the following figure. The direction of electric field at the centre of the square is along
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