Question

An RC-circuit is grounded at its batteryâ s negative terminal. This is the sequence of circuit elements: positive terminal of battery to resistor to capacitor to negative terminal of battery. The batteryâ s emf is 7.453 volts. The resistance of the circuit is 3.2 ohms. Its relaxation time is 23.8 milliseconds. At a particular time, t, the charge on the positive side of the capacitor is 21.2 millicoulombs. Before continuing, carefully calculate that current that runs through the circuit at time, t, in your notes. Remember units and significant figures! Hey, what would have been your reaction if I had told you that the voltage across the capacitor was 8 volts?
A. What unit will you be using for your answer?
B. How many significant digits should your answer have?
C. What is the current that runs through the circuit at time, t?

Answer 1