MCQ
The impedance of the given circuit is......$\Omega $
- ✓$30$
- B$42$
- C$74$
- D$2\sqrt {417}$
✓
Answer
Correct option: A.
$30$
a
$\mathrm{Z}=\sqrt{\mathrm{R}^{2}+\left(\mathrm{X}_{\mathrm{L}}-\mathrm{X}_{\mathrm{C}}\right)^{2}}=\sqrt{18^{2}+(40-16)^{2}}$
$\mathrm{Z}=\sqrt{\mathrm{R}^{2}+\left(\mathrm{X}_{\mathrm{L}}-\mathrm{X}_{\mathrm{C}}\right)^{2}}=\sqrt{18^{2}+(40-16)^{2}}$
$=\sqrt{18^{2}+24^{2}}=\sqrt{900}=30$
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