Two straight infinitely long and thin parallel wires and spaced 0.1 m apart and carry a current of 10 ampere each. Find the magnetic field at a point distance 0.1 m from both wires in the two cases when the currents are in the (a) same and (b) opposite directions.
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"Here, P is at the equal distance with A and wire
Hence, Ba = Bb = B
B = μ * 2 * I / 4 * pi * d
= 1-=0^-7 * 2 * 10 / 0.1
= 2 * 10^-5 T
The magnetic force of current on the Ba concentric will be perpendicular to that of AP and Bb will be perpendicular to the AP.
a. If it is in the same direction then, Ba and Bb will make a pi/3 angle
B = 2B cos 60 = 2 under root 2 * 10^ -5 T along x-axis
b. If it is in opposite direction then, Ba and Bb will make a 2* pi/3 angle
B = 2B cos 2pi/3 = 2 * 10^-5 T along Y axis
"
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