OnlineCBT
Physics · Electrostatic Potential
हिन्दीTwo point charges \( 3 \times 10^{-8}\text{ C} \) and \( -2 \times 10^{-8}\text{ C} \) are placed \( 15\text{ cm} \) apart. The electric potential is zero at a point on the line joining the two charges, at a distance from the positive charge given by:
Correct answer · Option 2
\( 9\text{ cm} \) and \( 45\text{ cm} \) / \( 9\text{ cm} \) और \( 45\text{ cm} \)
Explanation
Setting total potential to zero, \( \frac{3\times 10^{-8}}{x} + \frac{-2\times 10^{-8}}{15-x} = 0 \) yields \( x = 9\text{ cm} \) internally, and considering external point gives \( x = 45\text{ cm} \).
