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Magnetic flux density ( ) of the magnetic field at a point on the axis of a long straight solenoid…

Physics20231 markMCQ
Magnetic flux density ($B$) of the magnetic field at a point on the axis of a long straight solenoid is given by:
  • (a)$B = \mu_0 n I$
  • (b)$B = \frac{\mu_0 I}{2r}$
  • (c)$B = \frac{\mu_0 I}{4\pi r}$
  • (d)$B = \mu_0 I$

Answer

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Moving charges and magnetism

From ISC 2023 Specimen Physics Paper 1, question 1(A)(iii).