NDA 2026 Physics question
Two point charges of 4 C and 16 C are kept at a distance of 0·18 m. A third point charge of 1 C is kept between them such that the potential energy of the system is minimum. What is the magnitude of the electric field at the 1 C charge ?
Answer: (A)
Solution
The potential energy is a minimum where its derivative with respect to the position of the third charge is zero, i.e., where the net force on the third charge is zero. Force
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account