How is amperage calculated in an electrical context?

In an electrical context, amperage, which measures the flow of electric current, is calculated primarily using Ohm's Law. The formula states that current (in amperes) is equal to voltage (in volts) divided by resistance (in ohms). This aligns with the principle that amperage indicates how much electric charge is moving through a conductor in a circuit.

When considering the choice that states amperage can be calculated by multiplying watts or kilowatts, it's important to clarify that this refers to a different relationship in electrical systems. While watts (or kilowatts) represent the power in the circuit, the relationship between power (in watts) and current (in amperes) can be expressed as:

Power (P) = Voltage (V) × Current (I)

From this equation, current can also be expressed in terms of power and voltage, leading to the formula:

Current (I) = Power (P) / Voltage (V)

This means that when power (in watts) is known along with the voltage, one can indeed calculate the amperage. However, this option is not directly reflecting the basic calculation of amperage in common terms, which is typically grounded in Ohm's Law.

Understanding the definitions and formulas