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State biot savrat's law and apply …

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State biot savrat's law and apply it to find the magnetic field at a point due to long straight conductor carrying current

Posted by Altifa Khanushiya 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Kalindi Yadav 7 years, 10 months ago

The magnetic field produced by a current carrying element of length dl, carrying current I at a point separated by a distance r is given by dB = μo / 4 π Idl * r / r3 or dB = μo / 4 π Idl sin θ / r2 where, θ is the angle between the direction of the current and μo is absolute permeability of the free space. SI unit of magnetic field is Wm-2 or (tesla) and CGS unit of magnetic field is gauss or oersted 1 gauss = 10-4tesla.

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