An electrical device that operates by chemically creating a potential difference between two points is a ___.

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Get ready for the NCCER Introduction to Electrical Circuits exam. Study with multiple choice questions, each question comes with hints and explanations. Ace your exam with confidence!

Multiple Choice

An electrical device that operates by chemically creating a potential difference between two points is a ___.

Explanation:
A device that creates a potential difference by converting chemical energy into electrical energy is a battery. Inside a battery, chemical reactions push electrons from one terminal to the other, establishing a voltage between the terminals and supplying electrical energy to the circuit. Resistors don’t generate voltage—they simply use energy and convert it to heat as current flows. A capacitor can develop voltage, but only by storing charge from an external source; it doesn’t produce the energy itself. An inductor stores energy in a magnetic field and affects current changes, without chemical generation of voltage.

A device that creates a potential difference by converting chemical energy into electrical energy is a battery. Inside a battery, chemical reactions push electrons from one terminal to the other, establishing a voltage between the terminals and supplying electrical energy to the circuit. Resistors don’t generate voltage—they simply use energy and convert it to heat as current flows. A capacitor can develop voltage, but only by storing charge from an external source; it doesn’t produce the energy itself. An inductor stores energy in a magnetic field and affects current changes, without chemical generation of voltage.

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