Two cable carry line charge densities: (cables can be considered infinite long). lambda(a)=-3.8*8.85*10^-12 C/m, lambda(b)= 3*8.85*10^-12C/m.
a) Calculate the electric field generated by cable A at middle-point between two cables.
b) Calculate the electric field generated by cable B at middle-point between two cables.
c) Calculate the total electric field at middle-point between cables?