JEE Mains · Physics · STD 12 - 14. Semicondutor electronics
A voltage regulating circuit consisting of Zener diode, having break-down voltage of 10 V and maximum power dissipation of 0.4 W , is operated at 15 V . The approximate value of protective resistance in this circuit is _________ \(\Omega\).
- A 100
- B 150
- C 125
- D 200
Answer & Solution
Correct Answer
(C) 125
Step-by-step Solution
Detailed explanation
\(P_D=0.4 W=10 i\) \(i =0.04 A\) \(R =\frac{15-10}{0.04}=\frac{5}{0.04}=125 \Omega\)
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