Question

horizontal overhead power line carries current of 90A in east to west direction then magnitude and direction of magnetic field due to current at 1.5 m below line is

Answer 1

hopes !!!!! this is correct answer

Answer 2

Explanation:

Here your answer...

Magnetic field, 

Magnitude of magnetic field at a distance r due to straight current carrying conductor is given by

B=2π/μ0r/i

Given : i=90 A and r=1.5 m

B=2×10−7×1.590=1.2×10−5T