3. Describe the following concepts Magnetic field __ __

## Step 1<br />The problem asks us to describe the concept of a magnetic field. A magnetic field is a vector field, which means it has both magnitude and direction. It is a region of space where a magnetic force can be detected.<br /><br />## Step 2<br />Magnetic fields are created by magnets and certain types of electrical currents. They are responsible for the attraction and repulsion between magnets.<br /><br />## Step 3<br />The strength of a magnetic field is measured in units called teslas. The direction of the magnetic field is usually represented by the direction of the force it would exert on a north pole of a magnet.<br /><br />## Step 4<br />Magnetic fields are used in many applications, including in the design of electrical motors and generators, in the operation of magnetic storage media, and in the study of the Earth's magnetic field.