Question

two different pieces of metal are placed into a lemon and connected to a small led bulb. the bulb shines dimly. what type of electrochemical cell is described in this example? galvanic cell downs cell electrolytic cell prokaryotic cell

Explanation:

A galvanic cell (also called a voltaic cell) uses spontaneous redox reactions to generate electrical energy. In the lemon example, the two different metals and the lemon juice (an electrolyte) form a system where a spontaneous reaction occurs, producing a small current to light the bulb dimly. A Downs cell is for producing sodium metal (electrolytic, non - spontaneous, requires energy), an electrolytic cell uses electrical energy to drive non - spontaneous reactions, and a prokaryotic cell is a type of biological cell, not electrochemical. So the correct option is Galvanic Cell.

Answer:

A. Galvanic Cell