OnlineCBT
Physics · Electrostatic Potential
हिन्दीCalculate the potential at a point \( P \) due to a charge of \( 4 \times 10^{-7}\text{ C} \) located \( 9\text{ cm} \) away.
Correct answer · Option 2
\( 4 \times 10^4\text{ V} \)
Explanation
\( V = \frac{1}{4\pi\varepsilon_0} \frac{Q}{r} = \frac{9 \times 10^9 \times 4 \times 10^{-7}}{0.09} = 4 \times 10^4\text{ V} \).
