Question

Which of the following creates a voltage difference?

A. Battery
B. Amperes
C. Charge
D. Resistance

Answer 1

The correct option is C

Step-by-step explanation:

A battery is an electrochemical device that converts chemical energy into electrical energy. Electrochemical device contains two electrodes (anode and cathode). These two electrodes are placed in contact with an electrolyte. A spontaneous chemical reaction (redox reaction) causes electrical energy/current to be produced. This chemical reaction causes a potential difference (which produces electric current/charge). However, this charge/electric current causes a voltage difference.

Answer 2

Battery is a result of voltage or potential difference which creates the stored energy within the cell. Amperes and resistance individually could not create the voltage difference alone, and thus need each other. Difference in charges results to difference in potentials or voltage. Hence, the answer is C.