In an \( \mathrm{AC} \) circuit the potential differences across an inductance and resistance jo...

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In an \( \mathrm{AC} \) circuit the potential differences across an inductance and resistance joined in series are respectively \( 16 \mathrm{~V} \) and \( 20 \mathrm{~V} \). The total potential difference across the circuit is
(a) \( 20 \mathrm{~V} \)
(b) \( 25.6 \mathrm{~V} \)
(c) \( 31.9 \mathrm{~V} \)
(d) \( 53.5 \mathrm{~V} \)
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