A long straight wire carries a current of 35 A. Find the
magnitude of the magnetic field produced at a point
20 cm from the wire.
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Current in the wire, I = 35 A
Distance of a point from the wire, r = 20 cm = 0.2 m
Magnitude of the magnetic field at this point is given as:
B
Where,
μ0= Permeability of free space = 4π × 10–7 T m A–1
Hence, the magnitude of the magnetic field at a point 20 cm from the wire is 3.5 × 10–5 T.
Distance of a point from the wire, r = 20 cm = 0.2 m
Magnitude of the magnetic field at this point is given as:
B
Where,
μ0= Permeability of free space = 4π × 10–7 T m A–1
Hence, the magnitude of the magnetic field at a point 20 cm from the wire is 3.5 × 10–5 T.
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