Question 1 (10 marks)
For figure below, find electric field at P(0,0,0) due to (a) The line charge $\rho_1$=2nC/m passing through A(0,-3,0) (b) A point charge of 2 nC at B(2,-2,0). (c) A plane of negative charge with density 3nC/m². (d) The total field at origin