GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a device that generates electricity by combining certain chemicals?
A
a charger
B
a plug
C
a battery
D
a paperclip
Explanation: 

Detailed explanation-1: -A fuel cell is a device that generates electricity by a chemical reaction. Every fuel cell has two electrodes called, respectively, the anode and cathode. The reactions that produce electricity take place at the electrodes.

Detailed explanation-2: -A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.

Detailed explanation-3: -Batteries produce electricity A chemical reaction between the metals and the electrolyte frees more electrons in one metal than it does in the other. The metal that frees more electrons develops a positive charge, and the other metal develops a negative charge.

Detailed explanation-4: -An electric generator is a device that converts a form of energy into electricity.

Detailed explanation-5: -Hence, a device which converts electrical energy into mechanical energy is called a motor.

There is 1 question to complete.