What is the voltage in a circuit that has 0.8 amperes of current and a resistance of 100 ohms?

To determine the voltage in a circuit given the current and resistance, Ohm's Law is applied. Ohm's Law states that voltage (V) is equal to the current (I) multiplied by the resistance (R). The equation can be expressed as:

V = I × R

In this scenario, the current is 0.8 amperes and the resistance is 100 ohms. Plugging these values into the formula gives:

V = 0.8 A × 100 Ω V = 80 V

This calculation indicates that the voltage in the circuit is 80 volts. Understanding this fundamental principle of electricity is crucial for anyone involved in installation or maintenance work, as it applies to a wide range of electrical systems and components.