iit mains exam type questions of electrostatics
k \times 9 \times 10^{-6}}{(2)^2} \) N/C b) Zero c) \( \frac{k \times 9 \times 10^{-6}}{(3)^2} \) N/C d) Cannot be determined without charge density Conclusion Preparing for IIT Mains electrostatics questions requires a balanced comb