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Alternating Current question

2023 · Q152
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Alternating Current question

2023 · Q152

NEETPhysicsAlternating CurrentMCQ+4 / −1

If Z1_11​ and Z2_22​ are the impedances of the given circuits (a) and (b) as shown in figures, then choose the correct option

NEET 2023 Manipur Physics - Alternating Current Question 9 English

  1. A
    Z1_11​ < Z2_22​
  2. B
    Z1_11​ + Z2_22​ = 20 Ω\OmegaΩ
  3. C
    Z1_11​ = Z2_22​
  4. D
    Z1_11​ > Z2_22​
View written solutionFree

Correct answer: A

$$\begin{aligned} & Z_1=\sqrt{X_L^2+R^2} \quad \quad X_L=O \text { (D.C. circuit) } \\\\ & Z_1=10 \Omega \\\\ & Z_2=\sqrt{X_C^2+R^2} \\\\ & X_C=\frac{1}{2 \pi \times 50 \times \frac{10^3}{\pi} \times 10^{-6}}=10 \Omega \\\\ & Z_2=\sqrt{(10)^2+(10)^2} \\\\ & =10 \sqrt{2} \\\\ & Z_1 < Z_2\end{aligned}$$

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