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Semiconductors

JEE Main level, numerical answer, medium

68 of 209

Question 68 of 209

A zener diode of power rating $2W$ is to be used as a voltage regulator. If the zener diode has a breakdown of $10V$ and it has to regulate voltage fluctuated between $6V$ and $14V$ , the value of ${R}_{s}$ for safe operation should be _____ $\Omega$ .

Show answer and solution

Answer: 20

For diode

P=Vi

i=\dfrac{P}{V}=\dfrac{2}{10}=0.2A

Now for

{V}_{s}=14V

Voltage drop across

{R}_{s}=14-10=4V

Thus,

V={iR}_{s}

{R}_{s}=\dfrac{4}{0.2}=20\Omega

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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JEE Main Physics practice question on Semiconductors (Diodes), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.

A zener diode of power rating 2W2W2W is to be used as a voltage regulator. If the zener diode has a breakdown of 10V10V10V and it has to regulate voltage fluctuated between 6V6V6V and 14V14V14V, the value of Rs{R}_{s}Rs​ for safe operation should be _____ Ω\OmegaΩ .

JEE Main question paper PDF

More Physics practice

A zener diode of power rating $2W$ is to be used as a voltage regulator. If the zener diode has a breakdown of $10V$ and it has to regulate voltage fluctuated between $6V$ and $14V$ , the value of ${R}_{s}$ for safe operation should be _____ $\Omega$ .