An ac source is connected in the given circuit. The value of $\phi$ will be

An ac source is connected in the given circuit. The value of $\phi$ will be
  1. $30^{\circ}$
  2. $45^{\circ}$
  3. $60^{\circ}$
  4. $90^{\circ}$

Solution

$\begin{aligned} & X_L=\omega L \\ & X_L=100 \pi \times \frac{1}{\pi}=100 \Omega\end{aligned}$
$\begin{aligned} & \tan \phi=\frac{X_L}{R}=\frac{100}{100}=1 \\ & \phi=45^{\circ}\end{aligned}$

Asked in: NEET 2023 (Manipur)

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