The formula for voltage is derived from Ohm's Law and is expressed as:

V=I×RV=I\times RV=I×R

where:

• VVV is the voltage in volts (V),
• III is the current in amperes (A),
• RRR is the resistance in ohms (Ω).

This means voltage is calculated by multiplying the current flowing through a conductor by the resistance of that conductor

. In summary, to find voltage, multiply the current by the resistance. For example, if a current of 0.2 amperes passes through a resistor of 1000 ohms, the voltage across the resistor is:

V=0.2 A×1000 Ω=200 VV=0.2,A\times 1000,\Omega =200,VV=0.2A×1000Ω=200V

This is the fundamental relationship used in electrical circuits to calculate voltage