1.

\( \frac{3.14 \times 2 \times 10^{6}}{3} \)

Answer»
  1. |G (A) \( 3.15 \times 10^{-3} T \) \[ T =2 \pi \sqrt{\frac{ J }{ mB }} \quad\left[\because T =\frac{t}{n}=\frac{10}{10}=1 s \right] \] \[ \begin{aligned} \therefore \quad B &=\frac{4 \pi^{2} I }{ T ^{2} m }=\frac{4 \times(3.14)^{2} \times 8 \times 10^{-6}}{(1)^{2} \times 10^{-1}} \\ &=315.5 \times 10^{-5} \therefore B \approx 3.15 \times 10^{-3} T \end{aligned} \]


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