Question

question 11 (5 points)
current is described as
a) the flow of ions through a substance.
b) electricity.
c) the flow of electrons through a substance.
d) moles of electrons.

Explanation:

To determine the correct description of current, we analyze each option:

• Option A: Current in most conductive materials (like metals) is due to electron flow, not ion flow (ion flow is more common in electrolytes, but the general definition of electric current in circuits is electron flow). So A is incorrect.
• Option B: Electricity is a broader term; current is a part of electricity (the flow of charge), so B is too vague and incorrect.
• Option C: Electric current is defined as the flow of electric charge, and in metallic conductors (the most common case for electric circuits), this charge is carried by electrons. So this matches the definition of current.
• Option D: Moles of electrons refer to a quantity of electrons in a chemical context (like in electrochemistry for stoichiometry), not the definition of current. So D is incorrect.

Answer:

C. the flow of electrons through a substance.