A coil having N turns carry a current as shown in the figure. The magnetic field…
Physics · Class 12 · CBSE — Moving Charges and Magnetism
A coil having N turns carry a current as shown in the figure. The magnetic field intensity at point P is:
- \(\frac{\mu_{0} N i R^{2}}{2\left(R^{2}+x^{2}\right)^{3 / 2}}\)
- \(\frac{\mu_{0} N i}{2 R}\)
- \(\frac{\mu_{0} N i R^{2}}{(R+x)^{2}}\)
- zero
Answer
(A) _ 0 N i R^ 2 2 (R^ 2 +x^ 2 )^ 3 / 2
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