Voltage drop can be calculated using which of the following formulas?

The formula for calculating voltage drop involves the factors of distance, resistance, and current flowing through the circuit. In this case, the correct choice effectively captures this relationship.

The basis for the formula includes the total circuit length measured in feet, the resistance per foot of the conductor used, and the current in amperes flowing through the conductor. This formula can be represented as voltage drop equaling the product of these three components.

When analyzing the components:

1. The circuit length in feet allows for precise calculations over short distances, which is essential in low voltage communication systems where accuracy in voltage delivery is necessary.

2. The resistance per 1 foot reflects the specific characteristics of the conductor being used, which can vary based on the material and gauge of the wire.

3. The current represents the load on the circuit. As current increases, so does the voltage drop, making it vital to consider the current in any calculation.

Together, these elements create a clear picture of how much voltage will be lost due to the resistance of the conductor over a given distance when carrying a certain current, making the selected formula accurate and relevant in low voltage applications.