Fields of an electron At a particular instant a proton is at the origin, moving with velocity < 5 x 104, -4 104, -6 x 104 > m/s. At this instant: (a) What is the electric field at location < 3 x 10-, 3 x 10-, 3 x 10 > m, due to the proton? E = < 3.078e-5 3.078e-5 3.078e-5 > N/C (b) What is the magnetic field at the same location due to the proton? B = = < 7.128e-18 X -3.742e-17 3.089e-17 > T