Exercise 4 In a more complex electrical circuit, the charge is given by the following equation: Q(t) = 5e""+ 3sint - 3te" - (cost) (coulombs) Determine the equation for the current at any time t, and calculate the current at t=1. Copyright @ 2021 by Thomas Edison State University. All rights reserved. Exercise 5 In an electrical circuit, the charge is given by the following equation: Q(t) = e "(3 cos 2t + sin 2t) (coulombs) Determine the formula for the current in the circuit at any time t. Exercise 6 The resistance of a certain component decreases as the current through it increases. The relationship is described by the equation: R = 60 (8+2/3, (ohms) Determine: a. the current that results in the maximum power in the unit and b. the maximum power (watts) delivered to the unit