Question:
A Zener diode, having breakdown voltage equal to $15\,V$, is used in a voltage regulator circuit shown in figure. The current through the diode is
A Zener diode, having breakdown voltage equal to $15\,V$, is used in a voltage regulator circuit shown in figure. The current through the diode is
Updated On: May 11, 2026
- 5 mA
- 10 mA
- 15 mA
- 20 mA
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
\(I _{1}=\frac{15}{1 \,k \,\Omega}=15\, mA\)
\(I =\frac{20-15}{250}=20 \,mA\)
\(I _{2}= I - I _{1}=20\, mA -15\, mA =5\, mA\)
Was this answer helpful?
0
0
Top NEET Physics Questions
- A coil of inductive reactance $31\, \Omega$ has a resistance of 8 $\Omega$. It is placed in series with a condenser of capacitative reactance $25 \,\Omega$. The combination is connected to an a.c. source of 110 V. The power factor of the circuit is :-
- In an a.c. circuit with phase voltage V and current I, the power dissipated is
- A bubble in glass slab $ (\mu = 1.5) $ when viewed from one side appears at 5 cm and 2 cm from other side, then thickness of slab is
- A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. If the distance between parallel walls is 'd' then required focal length of lens placed in between the walls is : -
- A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length will
View More Questions
Top NEET Semiconductor electronics: materials, devices and simple circuits Questions
- To obtain a $p$-type germanium semiconductor, it must be doped with
- For a common emitter circuit if \(\frac{IC}{IE}=0.98\) then current gain for common emitter circuit will be
For a transistor \(\frac{I_C}{I_E}\)= 0.96, then the current gain for the common emitter configuration
- Of the diodes shown in the following diagrams, which one of the diode is reverse biased ?
- The following figure shows a logic gate circuit with two inputs A and B and the output C. The voltage waveform of A, B and C are as shown below:
The logic circuit gate is:
View More Questions
Top NEET Questions
- A coil of inductive reactance $31\, \Omega$ has a resistance of 8 $\Omega$. It is placed in series with a condenser of capacitative reactance $25 \,\Omega$. The combination is connected to an a.c. source of 110 V. The power factor of the circuit is :-
- In an a.c. circuit with phase voltage V and current I, the power dissipated is
- A bubble in glass slab $ (\mu = 1.5) $ when viewed from one side appears at 5 cm and 2 cm from other side, then thickness of slab is
- A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. If the distance between parallel walls is 'd' then required focal length of lens placed in between the walls is : -
- A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length will
View More Questions
Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.