Final answer:
Ohm’s law explains that the current (I) in a conductor is directly proportional to the potential difference (ΔV) and inversely proportional to the resistance (R), expressed as I = V/R.
Step-by-step explanation:
The current, I, in a conductor is related to the resistance, R, of the conductor and the potential difference across it, ΔV, by Ohm’s law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points. The law is usually expressed by the formula I = V/R, where I is the current in amperes, V is the potential difference in volts, and R is the resistance in ohms (Ω). In simple terms, Ohm's law explains that for an ohmic material (where Ohm's law is valid), the current flowing through it is determined by the voltage divided by the resistance. This relationship shows that as the resistance in a circuit increases, for a given voltage, the current will decrease, and vice versa.