A battery consists of which type of cells?
A. Electrolytic.
B. Electroplating.
C. Electromagnetic.
D. Electrochemical.
Electrochemical cells do what their names suggests: they make electricity from chemicals stored in the cell by redox reactions. A battery is a great example of this. The chemicals are stored in the cell until you complete the connection (turn on the flashlight, boom box, or car). Choices 1 and 3 use electricity for electrolysis and plating metal on objects (gold and silver plating). Electromagnetic usually refers to electric and magnetic fields oscillating at right angles to each other.