In a reverse biased diode when the applied voltage changes by \( 1 \mathrm{~V} \), the current i...

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In a reverse biased diode when the applied voltage changes by \( 1 \mathrm{~V} \), the current is found to change by \( 0.5 \mu \mathrm{A} \). The reverse bias resistance of the diode is
(a) \( 2 \times 10^{5} \Omega \)
(b) \( 2 \times 10^{6} \Omega \)
(c) \( 200 \Omega \)
(d) \( 2 \Omega \).
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