In a copper wire, the flow of current is made up of which of the following?A ionsB electronsC protonsD neutrons

Break Down the Problem

1. Identify the options presented in the question.
2. Understand the nature of electric current in conductors, particularly metals like copper.

Relevant Concepts

• Conductors, such as copper wire, allow electric current to flow primarily due to the movement of charge carriers.
• In metallic conductors, the primary charge carriers are electrons.

Analysis and Detail

1. Ions (Option A): Ions are charged particles that are typically found in electrolytic solutions, not in solid metal conductors.
2. Electrons (Option B): In metals, electrons are the free charge carriers that move through the lattice of metal atoms, creating an electric current.
3. Protons (Option C): Protons are positively charged particles found within atomic nuclei and do not move freely in a conductor.
4. Neutrons (Option D): Neutrons are neutral particles that also reside in atomic nuclei and do not contribute to electrical conductivity.

Verify and Summarize

• Current in a copper wire is due to the flow of electrons, not ions, protons, or neutrons.

Final Answer

The flow of current in a copper wire is made up of B. electrons.