Final answer:
A resistor limits current in a circuit, a coulomb is a unit of electrical charge, and a voltmeter measures voltage. To draw a circuit with the components listed, position two batteries in parallel, an open switch, two parallel resistors, an ammeter, and a voltmeter as described. For AC circuits with an AC generator connected to a resistor, capacitor, or inductor, graphing the voltage and current relationships depends on each component's impedance.
Step-by-step explanation:
A resistor is a component used in electrical circuits to limit current flow and dissipate energy as heat. A coulomb is a unit of electrical charge representing 6.242 x 1018 electrons. A voltmeter is an instrument used to measure the potential difference, or voltage, between two points in an electrical circuit.
To draw a circuit diagram with the listed components:
Start with two batteries in parallel to provide the voltage source.
Include an open switch in series with the rest of the circuit to control the flow of current.
Connect two resistors in parallel with each other to distribute the current flow.
Place an ammeter in series with the circuit to measure the total current.
Add a voltmeter in parallel across one of the resistors to measure the potential difference.
AC Circuits and Impulse Voltage Generation
The voltages across and currents through circuit elements when connected to an ac generator depend on their impedance. For example, in an AC circuit with a resistor, capacitor, or inductor, voltage and current relationships vary:
Resistors: The voltage and current are in phase with one another.
Capacitors: Current leads the voltage by 90 degrees (capacitive reactance).
Inductors: Voltage leads the current by 90 degrees (inductive reactance).
When graphing charge versus time on a capacitor, the graph for charging an initially uncharged capacitor would start at zero and asymptotically rise to the maximum voltage of the source, while the discharge graph would start at the initial charge and exponentially decrease to zero.