Magnetic field due to currentHard
Question
A wire carrying a current I is bent into the shape of an exponential spiral, r = eθ, form θ = 0 to θ = 2π as shown in figure. To complete a loop, the ends of the spiral are connected by a straight wire along the x-axis. Find the magnitude of B at the origin.
Options
A.
[1-e-2π]
[1-e-2π]B.
√2[1-e-2π]
√2[1-e-2π]C.
[1-e-2π]
[1-e-2π]D.
[1-e-2π]
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