What is the formula used to find the voltage of a circuit

The formulae to find the voltage of a circuit varies from one component to another

For resistor,

Let apply ohms law

V∝i

Then, V=iR

Where, V is voltage supply

i=is current in the circuit

R is the resistance of the resistor

This is formula for calculating voltage in a Resistor circuit

2. Capacitor

The formula for calculating voltage in a capacitor is

q=CV

Then, V=q/C

Where V is voltage

q is charge on capacitor

And C is capacitance of capacitor

For inductor

The voltage across an inductor is

V=Li

Where V is voltage

And L is inductance and i = is the current.