In the diodes shown in the diagrams, which one is reverse biased?
Show Hint
The Correct Option is C
Solution and Explanation
A diode is reverse biased when the potential at the cathode (n-side) is higher than the potential at the anode (p-side).
(1) The potential at the anode is -12V, and the potential at the cathode is -5V. Since -12V<-5V, the diode is forward biased.
(2) The potential at the anode is 0V, and the potential at the cathode is -10V. Since 0V>-10V, the diode is forward biased.
(3) The potential at the anode is 0V, and the potential at the cathode is +5V. Since 0V<+5V, the diode is reverse biased.
(4) The potential at the anode is +5V, and the potential at the cathode is +10V. Since +5V<+10V, the diode is forward biased. Therefore, the diode in option (3) is reverse biased.
Top Questions on Semiconductor electronics: materials, devices and simple circuits
- A voltage regulating circuit consisting of a Zener diode having breakdown voltage of $10\,\text{V}$ and maximum power dissipation of $0.4\,\text{W}$ is operated at $15\,\text{V}$. The approximate value of protective resistance in this circuit is ___ $\Omega$.
- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- In hydrogen atom spectrum, (R → Rydberg's constant)
A. the maximum wavelength of the radiation of Lyman series is 4/3R
B. the Balmer series lies in the visible region of the spectrum
C. the minimum wavelength of the radiation of Paschen series is 9/R
D. the minimum wavelength of Lyman series is 5/4R
Choose the correct answer from the options given below :- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
Assuming in forward bias condition there is a voltage drop of \(0.7\) V across a silicon diode, the current through diode \(D_1\) in the circuit shown is ________ mA. (Assume all diodes in the given circuit are identical)
- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- The correct truth table for the given input data of the following logic gate is:
- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
For the given logic gate circuit, which of the following is the correct truth table ?
- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
Questions Asked in AP EAMCET exam
Which of the following are ambident nucleophiles?
[A.] CN$^{\,-}$
[B.] CH$_{3}$COO$^{\,-}$
[C.] NO$_{2}^{\,-}$
[D.] CH$_{3}$O$^{\,-}$
[E.] NH$_{3}$- AP EAMCET - 2024
- Acids and Bases
- The correct sequence of enzymes involved in the commercial production of ethanol by fermentation from sugar is:
- AP EAMCET - 2024
- Acids and Bases
- At 298 K, the ionization constant of \( {CN}^- \) is \( 2.08 \times 10^{-6} \). What is the ionization constant of its conjugate acid? (Given \( K_w = 10^{-14} \))
- AP EAMCET - 2024
- Acids and Bases
Identify the anomers from the following.
- AP EAMCET - 2024
- Acids and Bases
The standard Gibbs free energy change \( \Delta G^\circ \) of a cell reaction is \(-301 { kJ/mol}\). What is \( E^\circ \) in volts?
(Given: \( F = 96500 { C/mol}\), \( n = 2 \))- AP EAMCET - 2024
- Acids and Bases