Question

Which of the following statements are true concerning the creation of magnetic fields? Check all that apply.

A single stationary electric charge creates a magnetic field at all points in the surrounding region. A distribution of electric charges at rest creates a magnetic field at all points in the surrounding region. A moving electric charge creates a magnetic field at all points in the surrounding region. A permanent magnet creates a magnetic field at all points in the surrounding region. An electric current in a conductor creates a magnetic field at all points in the surrounding region.

Answer 1

Answer;

• A moving electric charge creates a magnetic field at all points in the surrounding region.
• An electric current in a conductor creates a magnetic field at all points in the surrounding region.
• A permanent magnet creates a magnetic field at all points in the surrounding region.

Explanation;

• A magnetic field describes a volume of space where there is a change in energy.
• Magnetic field is produced whenever an electrical charge is in motion. Therefore, the motion of an electric charge produces a magnetic field.
• Magnetic field depend on the charge, velocity, and acceleration of the particles. Magnetic field and electric field are related such that an electrical charge in motion causes a magnetic field, and a magnetic field in motion causes an electric field.