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 4, 2024
- 5 mA
- 10 mA
- 15 mA
- 20 mA
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The Correct Option is A
Solution and Explanation
$I _{1}=\frac{15}{1 \,k \,\Omega}=15\, mA$
$I =\frac{20-15}{250}=20 \,mA$
$I _{2}= I - I _{1}=20\, mA -15\, mA =5\, mA$
$I =\frac{20-15}{250}=20 \,mA$
$I _{2}= I - I _{1}=20\, mA -15\, mA =5\, mA$
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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.