You have become concerned about how much electricity you are paying for because of all the AC adapters in your home. Your AC adapters look similar to the oneshown in the figure below, and each is marked with the following information: Input 120 V AC 6 W, Output 8 V DC 305 mA.The primary winding in this transformer isattached to the prongs of the plug, whereasthe secondary winding is connected to thepower cord on the right.(a) Determine the energy efficiency (as a percentage) of each AC adapter when it is powering a device drawing 305 mA.(b) Determine the rate (in W) at which input energy is transformed to internal energy in the AC adapter when the device is powered.W(c) Determine the cost (in dollars) of having six such AC adapters around the house, each plugged in for 31 days, assuming that the input power to the adapteris constant at 6 W regardless of whether the device is switched on or off, and energy costs $0.100/kWh from the electric company.%24© Cengage

Given: The input voltage given to the AC adapter is Vin = 120 V The input power given to the AC…

Answered: You have become concerned about how…

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