10- T. Randomized Variables A solenoid N= 2500 turns L = 15 cm R = 1.1 cm B=4.6 x 10 T I= Part (a) What is the current through the wires of the solenoid? Write your equation in terms of known quantities. Expression: s made of N 2500 turns, has length L = 15 cm, and radius R = 1.1 cm. The magnetic field at the center of the solenoid is measured to be B = 4.6 x Select from the variables below to write your expression. Note that all variables may not be required. a, P, Mo, 0, B, d, g, h, j, k, L, m, N, P, t I= Part (b) Find the numerical value of the current in milliamps. Numeric: A numeric value is expected and not an expression.