Ridhi is attempting to deflect a beam of electrons by 90 by passing the beam through a solenoid. The beam is aimed be- tween two adjacent turns of the solenoid. It enters the solenoid on a radially inward path toward the solenoid's central axis, and it exits on a radially outward path. The solenoid has N = 250 turns over a length of L = 85 cm, and a radius of r = 3.0 cm. If each electron in the beam is traveling at 4.5 km/s, then how much current i should Ridhi supply to the solenoid to deflect the beam by 90 before it exits the solenoid? For the limit check, investigate what happens to i if the elec- tron is traveling extremely quickly (v )