Final answer:
The 12-VDC light bulb drawing 0.2 amperes uses 2.4 watts of electrical power, calculated using the formula P = V × I.
Step-by-step explanation:
Electrical Power is the outcome of Electrical Energy. Whenever the electric current flows it does some work. This work generates power that can be stored and used as energy. Electric Power is similar to mechanical power and both can be transformed into one another. To calculate the electrical power used by a 12-VDC light bulb that draws 0.2 amperes, we use the formula for power, which is P = V × I, where P is power in watts, V is voltage in volts, and I is current in amperes. For this light bulb, the calculation is as follows:
P = 12 V × 0.2 A = 2.4 Watts.
Therefore, the light bulb uses 2.4 watts of electrical power.