KCET · Physics · Semiconductors
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 \(2 \Omega\)
Answer & Solution
Correct Answer
(B) \(2 \times 10^{6} \Omega\)
Step-by-step Solution
Detailed explanation
Reverse resistance
\[
\begin{aligned}
&=\frac{\Delta V}{\Delta I} \\
&=\frac{1}{0.5 \times 10^{-6}} \\
&=2 \times 10^{6} \Omega
\end{aligned}
\]
\[
\begin{aligned}
&=\frac{\Delta V}{\Delta I} \\
&=\frac{1}{0.5 \times 10^{-6}} \\
&=2 \times 10^{6} \Omega
\end{aligned}
\]
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Two particles of masses \( m_{1} \) and \( m_{2} \) have equal kinetic energies. The ratio of their momentum isKCET 2018 Easy
- What is the nature of Gaussian surface involved in Gauss law of electrostatic ?KCET 2014 Easy
- The dc common emitter current gain of a n-p-n transistor is 50, The potential difference applied
across the collector and emitter of a transistor used in \( C E \) configuration is \( V_{C E}=2 V \). If the
collector resistance,
\( R_{C}=4 \mathrm{~K} \Omega \), the base current \( \left(I_{B}\right) \) and the collector current \( \left(I_{C}\right) \) areKCET 2018 Hard - In the cyclotron, as radius of the circular path of the charged particle increases (to = angular
velocity, \( v= \) linear velocity)KCET 2016 Medium - Maximum diffraction takes place in a given slit forKCET 2008 Easy
- What is the value of acceleration due to gravity at a height equal to half the radius of the Earth, from its surface?KCET 2024 Medium
More PYQs from KCET
- In \(R-L-C\) series circuit, the potential differences across each element is \(20 \mathrm{~V}\). Now the value of the resistance alone is doubled, then P.D. across \(R, L\) and \(C\) respectively.KCET 2013 Easy
- At certain place, the horizontal component of earth's magnetic field is \( 3.0 \mathrm{G} \) and the angle dip
at that place is \( 30^{\circ} \). The magnetic field of earth at that locationKCET 2016 Easy - Which of the following statement does not hold good for thermal radiation?KCET 2009 Medium
- The sum of the squares of the eccentricities of the conics \(\frac{x^{2}}{4}+\frac{y^{2}}{3}=1\) and \(\frac{x^{2}}{4}-\frac{y^{2}}{3}=1\) isKCET 2013 Medium
- For the parabola \(\mathrm{y}^{2}=4 \mathrm{x}\), the point \(P\) whose focal distance is 17 , isKCET 2009 Medium
- In thermodynamic processes, which of the following statements is not true?KCET 2026 Easy