Bulb Voltage

Bulb voltage is a measure of the potential difference existing between two points in a circuit. Put simply, it’s the “pressure” of electric current that allows it to flow through a circuit. Voltage is usually expressed in volts (V), and for most lightbulbs this ranges from about 1 V to 300 V. Bulb voltage affects how much electric current flows through the bulb and thus how brightly it glows; too little or too much voltage will cause the bulb to burn out prematurely or produce less light than its rated capacity. Depending on the type of bulb, higher voltages may also cause flickering or buzzing noises.