Question

All formula of magnetic field of class 10

Answer 1

Answer:

Explanation:

Magnetic Field Formula

When electric current is carried in a wire, a magnetic field is formed around it. The magnetic field lines form concentric circles around the wire. The magnetic field direction depends on the direction of the current. It can be determined using the "right hand rule", by pointing the thumb of your right hand in the direction of the current. The direction of the magnetic field lines is the direction of your curled fingers. The magnitude of the magnetic field depends on the amount of current, and the distance from the charge-carrying wire. The formula includes the constant . This is called the permeability of free space, and has a value . The unit of magnetic field is the Tesla, T.

B = magnetic field magnitude (Tesla, T)

= permeability of free space ()

I = magnitude of the electric current (Amperes, A)

r = distance (m)