How can resistance be calculated using voltage and current?

Resistance can be calculated using Ohm’s Law, which relates voltage, current, and resistance.

Mathematically:
R = V / I

where:
R = resistance (ohms)
V = voltage (volts)
I = current (amperes)

This formula shows that resistance is the ratio of the potential difference across a conductor to the current flowing through it.

For example, if a conductor has a voltage of 10 V and a current of 2 A:
R = 10 / 2 = 5 ohms

This method is commonly used in circuit analysis to determine unknown resistance values.