A) \[20\,\Omega \]
B) \[15\,\Omega \]
C) \[30\,\Omega \]
D) \[21\centerdot 13\,\Omega \]
Correct Answer: D
Solution :
Impedance, \[Z=\sqrt{{{R}^{2}}+{{\left( {{X}_{L}}-{{X}_{C}} \right)}^{2}}}\] \[=\sqrt{{{\left( 12 \right)}^{2}}+{{\left( 31\,.\,4-14 \right)}^{2}}}=21\,.\,13\,\Omega \]
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