Question

WHAT IS A MAGNETIC FIELDS STRENGTH AND ITS CALCULATIONS

Answer 1

Magnetic field strength is the measure of the intensity of a magnetic field at a specific point in space. It is represented by the symbol "B" and is measured in units of tesla (T) or gauss (G). A magnetic field is produced when an electric charge is in motion, like an electron in an atom, or when electric current flows through a wire. The magnetic field strength is dependent on the amount of magnetic flux passing through an area.

The formula to calculate magnetic field strength is given by B = μ₀(I/(2πr)), where B is the magnetic field strength, μ₀ is the permeability of free space, I is the current flowing through the conductor, and r is the distance from the center of the conductor to the point in space where the magnetic field strength is being measured.

To simplify this formula, we can think of the magnetic field strength as being directly proportional to the current flowing through the wire and inversely proportional to the distance from the wire. In other words, the closer you are to the wire, the stronger the magnetic field, and the greater the current flowing through the wire, the stronger the magnetic field.

In summary, magnetic field strength is a measure of the intensity of a magnetic field and is dependent on the amount of magnetic flux passing through an area. The formula to calculate magnetic field strength takes into account the current flowing through a wire and the distance from the wire. The closer you are to the wire and the greater the current flowing through it, the stronger the magnetic field.

Answer 2

The magnetic field strength is H=I/2πr

Step-by-step explanation:

A current I through a long, straight wire produces a magnetic field with strength H=2πr at distance of r from the wire. So the field strength is inversely proportional to the distance from the wire.