What is the strength of the electric field at point 4 cm from the center? respactively, the surface charge density on the inside surface is 200nc/m, the surface charge density on the exterior surface is +200nc/m express your answer to three significant figures and include the appropriate units. value units you have already submitted this answer. enter a new answer. no credit lost. try again. submit previous answers request answer part e what is the strength of the electric field at point 12 cm from the center? express your answer to three significant figures and include the appropriate units. ?