The strength of a light bulb is measured in:

The strength of a light bulb is measured in:

• A. Volts
• B. Ohms
• C. Watts
• D. Amperes

Answer: (C)

The strength of a light bulb corresponds to how much electrical energy it converts per second, i.e., its power. Power is measured in watts and is defined by P = V × I (voltage multiplied by current). So a higher wattage means more energy is used each second and typically a brighter bulb, assuming similar efficiency. Voltage is the push that drives current, amperes measure how much current flows, and ohms measure resistance. None of those alone quantify how much energy per second the bulb uses, which is why watts is the correct measure. Bulbs are rated by wattage at a given supply voltage, linking power directly to brightness.

The strength of a light bulb corresponds to how much electrical energy it converts per second, i.e., its power. Power is measured in watts and is defined by P = V × I (voltage multiplied by current). So a higher wattage means more energy is used each second and typically a brighter bulb, assuming similar efficiency. Voltage is the push that drives current, amperes measure how much current flows, and ohms measure resistance. None of those alone quantify how much energy per second the bulb uses, which is why watts is the correct measure. Bulbs are rated by wattage at a given supply voltage, linking power directly to brightness.