1a. When charge continuously moves through a conducting wire, the steady charge flow is called current, denoted by letter I. Write the expression of I in terms of charge and time. b. What is the unit of current? 2a. What is the physical meaning of resistance (R)? b. What is the mathematical relationship (not the equation) between the voltage, V, applied to a resistance, R, and the current, I, flowing through it? c. Write the equation that relates the variables V, R, and, I? 3. In this lab, you will construct a circuit that measures both voltage applied to a resistor and also the current flowing through it. Draw the circuit diagram showing (and labeling) the power supply, the resistor, the ammeter, and the voltmeter