A diode having potential difference \( 0.5 \mathrm{~V} \) across its junction which does not dep...

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A diode having potential difference \( 0.5 \mathrm{~V} \) across its junction which does not depend on current, is connected in series with resistance of \( 20 \Omega \) across source. If \( 0.1 \mathrm{~A} \) current passes through resistance then what is the voltage of the source?
(a) \( 1.5 \mathrm{~V} \)
(b) \( 2.0 \mathrm{~V} \)
(c) \( 2.5 \mathrm{~V} \)
(d) \( 5 \mathrm{~V} \)
\( \mathrm{P} \)
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