Q:
# What are some commonly used electrical math formulas?

Ohm's law, expressed as the formula written as V = IR, is the most commonly used mathematical formula in electrical work. The electrical power formula, written as P = VI, is another frequently used electrical math formula.

Continue ReadingIn electrical math, V = voltage, R = resistance in ohms, I = current in amperes and P = power in watts. Thus, the formula V = RI means "voltage equals resistance times current." This formula can be used to find voltage, resistance or current if the other two variables are known.

Similarly, the power formula, P = VI, can be used to calculate power, voltage or current if the other two variables are known. The power formula is sometimes written as W = VA, where W = wattage and A = amperage. This formula is remembered with the mnemonic device "West Virginia."

Learn more about Electrical-
Q:
## How do you estimate electrical work?

A: Estimating the cost of electrical work includes the predicted costs of supplies, materials, wiring and labor, according to Homewyse. As of January 2014, th... Full Answer >Filed Under: -
Q:
## What is the common-mode gain?

A: The common-mode gain is part of the common-mode rejection ratio formula that measures the output voltage of a differential amplifier based on two inputs. T... Full Answer >Filed Under: -
Q:
## What is conduit bending math?

A: Conduit bending math is the math used by electricians to decide where to apply force to electrical conduit to create the right shaped bend in the right pla... Full Answer >Filed Under: -
Q:
## How does an intermediate switch work?

A: There are four terminals in an intermediate switch. These change the flow of current from one circuit to another circuit. In some cases, there is straight ... Full Answer >Filed Under: