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Alternating Current question

2023 · Q137
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Alternating Current question

2023 · Q137

NEETPhysicsAlternating CurrentMCQ+4 / −1

An ac source is connected in the given circuit. The value of ϕ\phiϕ will be :

NEET 2023 Manipur Physics - Alternating Current Question 8 English

  1. A
    60∘60^{\circ}60∘
  2. B
    90∘90^{\circ}90∘
  3. C
    30∘30^{\circ}30∘
  4. D
    45∘45^{\circ}45∘
View written solutionFree

Correct answer: D

$$\tan \phi=\frac{\mathrm{X}_{\mathrm{L}}}{\mathrm{R}}$$

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

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