Question

BIOT-SAVART LAW
State and explain Biot-Savart law for the magnetic
field produced by a current element. Define the SI unit of
magnetic field from this law.​

Answer 1

Answer:

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Answer 2

Answer:

The Biot-Savart's law gives the magnetic field produced due to a current carrying segment. ... The magnitude of the magnetic field dB at a distance r from a current carrying element dl is found to be proportional to I and to the length dl. And is inversely proportional to the square of the distance |r|.

Explanation:

The Biot Savart Law is used to determine the magnetic field intensity B near a current carrying conductor in terms of magnetic field intensity generated by its source current element.

Consider a wire carrying an electric current I and also consider an infinitely small length of a wire dl at a distance r from point A.

Biot Savart Law states that magnetic intensity dB at a point A due to current I flowing through a small element dl is

a) Directly proportional to current (I)

b) Directly proportional to the length of the element (dl)

c) Directly proportional to the sine of angle θ between the direction of current and the line joining the element dl from point A.

d) Inversely proportional to the square of the distance (x) of point A from the element dl.

dB∝Idlsinθ/r×r

dB=K×Idlsinθ/r×r

where, K= μ0μr/4πμ0

μ0= Absolute permittivity of air in vacuum

μr= relative permittivity.