List of top Physics Questions on Electric Field asked in AMUEEE

The electric field in a region is given by $ E=\frac{A}{x^{3}}\,\hat{i}+By\,\hat{j}+Cz^{2}\,\hat{k} $ The $ SI $ units of $ A $ , $ B $ and $ C $ are, respectively

Two point charges $ + 10^{-7} C $ and $ - 10^{-7} C $ are placed at $ A $ and $ B, 20 \,cm $ apart as shown in the figure. Calculate the electric field at $ C, \,20\, cm $ apart form both $ A $ and $ B $ .