The electron beam emerging from a certain high energy electron accelerator has a circular cross section of radius 1.25 mm. (a) The beam current is 7:05 HA. Find the current density in the beam assuming it is un form throughout, 202 X Your response differs significantly from the correct answer Rework your solution from the beginning and check each step carefully. Arm (bj The speed of the electrons is so close to the speed of light that their speed can be taken as 300 Hinds with negligible error Find the election density in the beam. 7.40 X Your response differs significantly from the correct answer, Rework your solution from the beginning and check each step carefully. m ]. (s) Over what time internal does Avogadro's number of electrons emerge from the accelerator? 1.21 Your response differs significantly from the correct amman Rework your solution from the beginning and check each step carrdully, Nood Help