Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.

Define the magnetic field based on a moving charge experiencing a force; Apply the right-hand rule to determine the direction of a magnetic force based on the motion of a charge in a magnetic field; Sketch magnetic field lines to understand which way the magnetic field points and how strong it is in a region of space

Electric current in a circular loop creates a magnetic field which is more concentrated in the center of the loop than outside the loop. Stacking multiple loops concentrates the field even more into what is called a solenoid .

It is well known that the axis of the magnetic field is tipped with respect to the rotation axis of the Earth. Thus, true north (defined by the direction to the north rotational pole) does not coincide with magnetic north (defined by the direction to the north magnetic pole) and compass directions must be corrected by fixed amounts at given ...

$B$ is the magnetic field (Tesla) at any point in space that isn't on the current loop. It is equal to the sum of two field components: $B_x$ the field component that is aligned with the axis and $B_r$ , the field component that is in a radial direction.

An infinitely long circular cylinder carries a uniform magnetization parallel to its axis. Find the magnetic field (due to ) inside and outside the cylinder. Consider a coordinate system S in which the z axis coincides with the axis of the cylinder. The magnetization of the material is equal to

We can use the Biot-Savart law to find the magnetic field due to a current. We first consider arbitrary segments on opposite sides of the loop to qualitatively show by the vector results that the net magnetic field direction is along the central axis from the loop.

The field around the magnet generates a magnetic field, and the rotating magnets in a generator produce electricity. The phenomenon which relates electricity and magnetism is known as the electromagnetic force. In this article, let us learn about the magnetic field on the axis of a circular current loop in detail.

Magnetic declination / magnetic variation: the Earth’s magnetic axis is not parallel to its geographic axis (axis of rotation) a compass reading deviates from geographic north. Magnetic inclination: the magnetic field is not horizontal at most of earth’s surface, its angle up or down. The magnetic field is vertical at magnetic poles.

Use Biot-Savart law to derive the expression for the magnetic field on the axis of a current carrying circular loop of radius R. Draw the magnetic field lines due to a circular wire carrying current I.