SATHEE: Modern Physics 6 Question 1

Modern Physics 6 Question 1

1. Figure shows a DC voltage regulator circuit, with a Zener diode of breakdown voltage $= 6 V$ . If the unregulated input voltage varies between $10 V$ to $16 V$ , then what is the maximum Zener current?

(Main 2019, 12 April II)

(a) $2.5 m A$

(b) $1.5 m A$

(d) $3.5 m A$

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Solution:

In given voltage regulator circuit breakdown of Zener occurs at $6 V$ .

After breakdown, voltage across load resistance $(R_{L} = 4 k Ω)$ is,

$V = V_{Z} = 6 V$

$∴$ Load current after breakdown,

$I_{L} = \frac{V_{Z}}{R_{L}} = \frac{6}{4000} = 1.5 \times 10^{- 3} A$

When unregulated supply is of $16 V$ , potential drop occurring across series resistance $(R_{S} = 2 k Ω)$ is;

$V_{S} = V - V_{Z} = 16 - 6 = 10 V$

So, current across series resistance is

$I_{S} = \frac{V_{S}}{R_{S}} = \frac{10}{2 \times 10^{3}} = 5 \times 10^{- 3} A$

So, current across Zener diode is

$I_{Z} = I_{S} - I_{L} = 5 \times 10^{- 3} - 1.5 \times 10^{- 3} = 3.5 \times 10^{- 3} A$

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अगला

Modern Physics 6 Question 1

1. Figure shows a DC voltage regulator circuit, with a Zener diode of breakdown voltage $= 6 V$ . If the unregulated input voltage varies between $10 V$ to $16 V$ , then what is the maximum Zener current?

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Modern Physics 6 Question 1

1. Figure shows a DC voltage regulator circuit, with a Zener diode of breakdown voltage =6V. If the unregulated input voltage varies between 10V to 16V, then what is the maximum Zener current?

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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1. Figure shows a DC voltage regulator circuit, with a Zener diode of breakdown voltage $= 6 V$ . If the unregulated input voltage varies between $10 V$ to $16 V$ , then what is the maximum Zener current?