Question:
An experiment is performed to determine the \(I\) - V characteristics of a Zener diode, which has a protective resistance of \(R = 100\ \Omega\), and a maximum power of dissipation rating of 1 W. The minimum voltage range of the \(DC\) source in the circuit is :
An experiment is performed to determine the \(I\) - V characteristics of a Zener diode, which has a protective resistance of \(R = 100\ \Omega\), and a maximum power of dissipation rating of 1 W. The minimum voltage range of the \(DC\) source in the circuit is :
Show Hint
The 1 W rating limits the current to \(\sqrt{P/R} = 0.1\) A, giving about 10 V across R; the source must cover this plus the Zener drop, so the smallest sufficient range among the options is 0 - 12 V.
Updated On: Nov 11, 2026
- 0 - 5 V
- 0 - 8 V
- 0 - 12 V
- 0 - 24 V
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Maximum permitted power 1 W with \(R = 100\ \Omega\): \(P = I^2R\Rightarrow I_{max} = \sqrt{\frac{1}{100}} = 0.1\) A.
Voltage across the protective resistor at this current: \(V_R = I_{max}R = 0.1\times 100 = 10\) V.
The source must supply this 10 V and in addition the Zener drop, so a source of range 0 - 5 V or 0 - 8 V is inadequate to drive the circuit up to the rated dissipation; of the options the minimum suitable range is 0 - 12 V.
Answer: (3) 0 - 12 V
Voltage across the protective resistor at this current: \(V_R = I_{max}R = 0.1\times 100 = 10\) V.
The source must supply this 10 V and in addition the Zener drop, so a source of range 0 - 5 V or 0 - 8 V is inadequate to drive the circuit up to the rated dissipation; of the options the minimum suitable range is 0 - 12 V.
Answer: (3) 0 - 12 V
Was this answer helpful?
0
0
Top JEE Main Physics Questions
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
A black body is at a temperature of 2880 K. The energy of radiation emitted by this body with wavelength between 499 nm and 500 nm is U1, between 999 nm and 1000 nm is U2 and between 1499 nm and 1500 nm is U3. The Wien's constant, b = 2.88×106 nm-K. Then,
- $I _{ CM }$ is the moment of inertia of a circular disc about an axis (CM) passing through its center and perpendicular to the plane of disc $I_{A B}$ is it's moment of inertia about an axis $AB$ perpendicular to plane and parallel to axis $CM$ at a distance $\frac{2}{3} R$ from center Where $R$ is the radius of the dise The ratio of $I _{ AB }$ and $I _{ CM }$ is $x: 9$ The value of $x$ is______
- A nucleus disintegrates into two smaller parts, which have their velocities in the ratio $3: 2$ The ratio of their nuclear sizes will be $\left(\frac{x}{3}\right)^{\frac{1}{3}}$ The value of ' $x$ ' is:-
- A particle starts with an initial velocity of 10.0 m/s along x-direction and accelerates uniformly at the rate of 2.0 m/s$^2$. The time taken by the particle to reach the velocity of 60.0 m/s is
View More Questions
Top JEE Main Simple diode circuits Questions
- In the circuit shown, assuming the threshold voltage of the diode is negligibly small, then the voltage \( V_{AB} \) is correctly represented by:
- The zener diode has a \(V_z = 30\ \mathrm{V}\). The current passing through the diode for the following circuit is ________ mA.
- Match List I with List II.
List I List II (a) Rectifier (i) Used either for stepping up or stepping down the a.c. voltage (b) Stabilizer (ii) Used to convert a.c. voltage into d.c. voltage (c) Transformer (iii) Used to remove any ripple in the rectified output voltage (d) Filter (iv) Used for constant output voltage even when the input voltage or load current change
Choose the correct answer from the options given below : - In the given figure, each diode has a forward bias resistance of \(30\,\Omega\) and infinite resistance in reverse bias. The current \(I_1\) will be :
- The current \(i\) in the network is :
View More Questions
Top JEE Main Questions
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.
A black body is at a temperature of 2880 K. The energy of radiation emitted by this body with wavelength between 499 nm and 500 nm is U1, between 999 nm and 1000 nm is U2 and between 1499 nm and 1500 nm is U3. The Wien's constant, b = 2.88×106 nm-K. Then,
View More Questions