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JIPMER 2005
Exam
JIPMER
Year
2005
Subject
Physics
Chapter
Magnetic Effects of Current

JIPMER 2005 · Physics · Magnetic Effects of Current

A coil having N turns carry a current as shown in the figure. The...

A coil having NN turns carry a current as shown in the figure. The magnetic field intensity at point PP is A coil having N turns carry a current as shown in the figure. The magnetic field intensity at point P is

Options

  1. Aμ0NiR22(R2+x2)3/2\frac{\mu_0 N i R^2}{2\left(R^2+x^2\right)^{3 / 2}}
  2. Bμ0Ni2R\frac{\mu_0 N i}{2 R}
  3. Cμ0NiR2(R+x)2\frac{\mu_0 N i R^2}{(R+x)^2}
  4. Dzero

Correct answer

A. μ0NiR22(R2+x2)3/2\frac{\mu_0 N i R^2}{2\left(R^2+x^2\right)^{3 / 2}}

Step-by-step solution

From the formula, magnetic field intensity at point PP, shown in given figure while coil carry current ii and having NN turns is given by μ0NiR22(R2+x2)3/2\frac{\mu_0 N i R^2}{2\left(R^2+x^2\right)^{3 / 2}}
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