7.4 Preliminary Assignment 1) An RL circuit is constructed using a (10.0+0.1) 2 resistor and a (8.1+0.1) mH inductor. The inductor has a resistance of R, = (5.2+0.1) $2 . This circuit is charged, and the values returned from the exponential fit are: A = -2.13, B =1930, and y. = 2.57 . A) Calculate the time constant (with uncertainty) from the values of R, R, & L. B) Determine the value of the time constant from the exponential fit. C) Determine if the time constants from Part A and Part B agree