The Voltage Drop Formula is used in the calculation of voltage drop in the electrical circuit. Voltage drop is the decrease in electric potential while the electric current moves through the circuit. The decrease in voltage in the circuit is caused due to impedance.
The formula for DC voltage drop is
V=IR
Where
V =Voltage drop in the circuit
I = current through the circuit
R = resistance
Solved Examples
Question 1: Calculate the dc voltage drop if 50 Ampere current flows through the wire of resistance 5 ohms.
Solution:
Given:
Current I = 50 A
Resistance R=5 ohms
Voltage drop is given by
V=IR
V=(50)(5)
V=250 volts