Find electric field at the given point ‘P’.

\frac{9 \sqrt{2} \times 10^{9} q}{a^{2}} N C^{- 1}

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\frac{9 \times 10^{9} q}{a^{2}} N C^{- 1}

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\frac{\sqrt{2} q \times 10^{9} q}{a^{2}} N C^{- 1}

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Solution

The correct option is A $\frac{9 \sqrt{2} \times 10^{9} q}{a^{2}} N C^{- 1}$
$E_{n e t} = \sqrt{2} E = \sqrt{2} \frac{K q}{r^{2}} = \sqrt{2} \times 9 \times 10^{9} \times \frac{q}{a^{2}} = 9 \sqrt{2} \times 10^{9} \frac{q}{a^{2}}$
$E_{n e t} = 9 \sqrt{2} \times 10^{9} \frac{q}{a^{2}}$

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Find electric field at the given point ‘P’.

The correct option is A 9√2×109qa2 NC−1Enet=√2E=√2Kqr2=√2×9×109×qa2=9√2×109qa2 Enet=9√2×109qa2

The correct option is A $\frac{9 \sqrt{2} \times 10^{9} q}{a^{2}} N C^{- 1}$
$E_{n e t} = \sqrt{2} E = \sqrt{2} \frac{K q}{r^{2}} = \sqrt{2} \times 9 \times 10^{9} \times \frac{q}{a^{2}} = 9 \sqrt{2} \times 10^{9} \frac{q}{a^{2}}$
$E_{n e t} = 9 \sqrt{2} \times 10^{9} \frac{q}{a^{2}}$