Voltage drop

A phenomenon in which electrical signals become low after passing through conductive objects such as connectors, circuit boards and wires. A conductive object has electrical resistance, so when a current (I) flows through a conductive object, the voltage (V) drops by I × R against the resistance (R) (Ohm's law). The energy lost at this time is W=I^2×R and is called resistive loss and is converted into heat.