Adrian Neil T. Bautista
A1-2BSME-SA
1. What is the difference between I, V, R and P?
Electric current (I) is a rate of flow and is measured in amps (A). The volt (V) is the
derived unit for electric potential, electric potential difference (voltage), and
electromotive force. Resistance is a measure of the opposition to current flow in an
electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega
(Ω). ). Electric power (P) is simply the product of current times voltage. Power has familiar
units of watts.
2. What is Ohm's Law?
Ohm's Law is a formula used to calculate the relationship between voltage, current and
resistance in an electrical circuit. It states that the current through a conductor between
two points is directly proportional to the voltage across the two points. Introducing the
constant of proportionality, the resistance, one arrives at the usual mathematical
equation that describes this relationship.
