Question

What expression best describes the magnetic field 5m away from a 100m long wire carrying 3A of current? F = quB sin(theta) P = ILB sin(theta) B = Holn Bhd 2 PiR (3A) (5m) (5 r 10 T) sin (90°) B 14(3A) F = (3A) (5m) (5 x10 ST) BASA 2 (37) Next Page Data

Answer 1

Magnetic field due to a current carrying wire is given by,

$\Rightarrow B = \frac{\mu_o I}{2 \pi R} = \frac{\mu_o I}{2 pi R}$

$\Rightarrow B = \frac{\mu_o (3 A)}{2 \pi (5m)}$

option (2 )