Volt Drop

Voltage Drop

The reduction in voltage in an electrical circuit due to resistance within the conductors.

Causes of Voltage Drop

Primarily caused by resistance in the conductors as electrical current flows through them, which converts electrical energy into heat.

Resistance

A measure of the opposition to current flow in an electrical circuit, affecting the current flow and voltage drop.

Formula for Voltage Drop Calculation

The voltage drop across a conductor can be calculated using the formula: Voltage Drop = Current (I) x Resistance (R).

Example Calculation of Voltage Drop

For a 10 A load with a resistance of 230 Ohm connected to a 230 V supply, the total resistance including the cable is 23.70 Ohm.

Cable Volt Drop Calculation

Cable volt drop is calculated using the formula: I x cable resistance.

Voltage Across Load Calculation

The voltage across the load can be found using the formula: I x load resistance.

Magnitude of Volt Drop

Depends on both the resistance of the cable and the amount of current being drawn by the load.

Example Cable Resistance

In the example, the cable resistance is given as 0.70 Ohm.

Example Load Resistance

In the example, the load resistance is given as 230 Ohm.