When a DC voltage of 200, V is applied to a c | vedclass

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Question

${{\rm{R}} = \frac{{\rm{V}}}{{{{\rm{I}}_1}}}}$         (for  $DC$)

${{\rm{Z}} = \frac{{\rm{V}}}{{{{\rm{I}}_2}}}}$&nbs

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Vedclass · Answer

${{\rm{R}} = \frac{{\rm{V}}}{{{{\rm{I}}_1}}}}$         (for  $DC$)

${{\rm{Z}} = \frac{{\rm{V}}}{{{{\rm{I}}_2}}}}$          (for  $AC$)

$Z=\sqrt{R^{2}+X_{L}^{2}}$

$\mathrm{X}_{\mathrm{L}}=\omega \mathrm{L}=2 \pi \mathrm{fL}$

When a $DC$ voltage of $200\, V$ is applied to a coil of self inductance $\frac{{2\sqrt 3 }}{\pi }\,H$, a current of $1\, A$ flows through it. But by replacing $DC$ source with $AC$ source of $200\, V$, the current in the coil is reduced to $0.5\, A$. Then, the frequency of $AC$ supply is......$Hz$

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