Question

If a copper rod carries direct current, the magnetic field associated with the current will be ______.

Options

• Only inside the rod
• Only outside the rod
• Both inside and outside the rod
• Neither inside nor outside the rod

Answer 1

If a copper rod carries a direct current, the magnetic field associated with the current will be both inside and outside the rod.

Explanation:

Direct current flows through the entire cross-section of a copper rod. As a result, a magnetic field exists both inside and outside the body.