Final answer:
The voltage source supplies the electrical potential difference between two points in a circuit. For a resistor, the voltage across it can be determined using Ohm's Law. The current source supplies a constant current to a circuit. The current through a resistor can be calculated using Ohm's Law. The power dissipated by a resistor can be found using the equation P = IV.
Step-by-step explanation:
The voltage source supplies the electrical potential difference between two points in a circuit. It is expressed in volts (V). For a resistor, the voltage across it can be determined using Ohm's Law, which states that V = IR, where V is the voltage, I is the current flowing through the resistor, and R is the resistance of the resistor.
The current source is a device that supplies a constant current to a circuit. The current through a resistor can be calculated using Ohm's Law. The power dissipated by a resistor can be found using the equation P = IV, where P is the power, I is the current, and V is the voltage across the resistor.