Question

What energy transformations occur in a tv remote?

Ex: for a battery in a flashlight it's chemical energy to electrical energy to light energy

Answer 1

Pressing the button: Mechanical to electrical
Waste energy from this step: Mechanical to heat
Converting electrical signal to IR: electrical to electromagnetic (infrared rays)
Waste energy from this step: electrical to heat
Chemical energy from battery: chemical to electrical

Answer 2

Pressing the button: Mechanical to electrical

Waste energy from this step: Mechanical to heat

Converting electrical signal to IR: electrical to electromagnetic (infrared rays)

Waste energy from this step: electrical to heat

Chemical energy from battery: chemical to electrical