Which of the following statements are true concerning the creation of magnetic fields?
check all that apply.
check all that apply.
a moving electric charge creates a magnetic field at all points in the surrounding region.
a single stationary 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.
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.

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:

Magnetic field can be produced by:

- moving charges (i.e. a moving electron, or a current in a conductor)

- A magnet

The strength of the magnetic field produced by a current-carrying wire is

where

I is the current

r is the distance from the wire

As we see from the formula, the magnetic field is produced at all points in the surrounding region, because B becomes zero only when r becomes infinite. The same is true for the magnetic field created by a single moving charge or by a magnet.

The following choices instead are not correct:

- 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.

Because they involve the presence of stationary charges, and stationary charges do not produce magnetic fields.

are there answer choices to this question? this seems like a question where you have options to choose from.

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.