Energy transformations and conversions?

Question

I have to identify energy transfers and transformations involving the conversion of energy in household items. I've tried, and this is what i've managed.

Cordless Drill:
240v AC electrical energy from ring main --> 14.4v DC (in transformer (and rectifier?)) stored in battery --> mechanical energy (via the motor effect in the motor producing torque)

Downlight:
240V AC electrical energy from the lighting circuit --> 12V AC (in the transformer) --> heat energy from resistance in the filament --> kinetic energy of electrons and atoms in filament --> light energy in the form of black body radiation

Refrigerator:
240V AC Electrical energy from the ring main --> mechanical energy (compressor in the motor) --> thermal energy

The problem is, i don't think the cordless drill or the refrigerator are in enough depth, and i don't even know if the downlight one is right, i was just guessing. And i don't know enough about how the drill or fridge work to go more in depth.

HELP!!!!

Answer 1

Cordless drill.
You are on the right track, I would maybe express
Current from the 120V AC source gets transfromed and rectified to 14.4v DC. The energy is the current times voltage times charging time less the losses due to resitance in the wires and rectifier. The stored energy in the battery gets converted to direct current at 14.4 volts through the drill motor (less resistance loss), which creates kinetic spinning energy of the drill less friction of the bearings. Also the friction of the bit into the material is a loss of energy.

Downlight:
120VAC electrical energy from the lighting circuit in the form of current creates a power of some wattage less resitance in the wires. The energy is the time it is on multiplied by the power. The filament resists the flow of current which causes heating and the transmission of elctromagnetic energy in the form of photons which is radiated from the filament. (If the downlight is 12V, there is a transformer that steps down the voltage).

Refrigerator:
120VAC from the source (with resistance loss) that energizes a motor that converts the electrical energy to kinetic energy. This runs a pump that compresses and circulates a refrigerant in pipes through the interior of the refrigerator. The liquid absorbs energy from the milk, eggs, and air in the fridge and then it goes to the extrior of the fridge where a pressure change releases some of the energy through coils into the ambient air of the room around the fridge. The collant then gets compressed by the motor and repeats the cycle.

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Answer 2

timber is made up of cellulose and different CH-compounds. To make this products it takes power from sunlight and whilst it truly is burned this chemical power is switched over to thermal power so the remarkable answer is A