Q152 / 160 · TS EAMCET 2020 (09 Sep Shift 2) · Physics

The magnetic field at point $P$ of given figure due to carrying of current $I$ by a conductor of radius $R$, is Figure

  • A
    $\frac{\mu_0 l}{4 \pi r} \mathrm{~T}$
  • Correct answer
    B
    $\frac{\mu_0 l}{2 \pi r} \mathrm{~T}$
  • C
    $\frac{\mu_0 l}{2 \pi R} T$
  • D
    $\frac{\mu_0 I}{4 \pi R} \top$

Solution

Magnetic field due to a current carrying conductor at an outside point is given by $B=\frac{\mu_0 I}{2 \pi r} \mathrm{~T}$

Hence, the correct answer is option: 'B'.

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