An electric current is constituted by:
- Charges in motion
- Charges at rest
- Neutral matter
- Empty vacuums
Show answer and solution
Correct answer: A. Charges in motion
1. A current needs something to flow.
2. Static charges produce no current at all.
3. Charges in motion constitute an electric current.
4. So the answer is charges in motion.
_Source: syllabus Physics, Ch 3 'Current Electricity'_