MHT CET · Physics · Waves and Sound
In a diode, when there is a saturation current, the plate resistance will be
- A data insufficient
- B zero
- C some finite quantity
- D infinite quantity
Answer & Solution
Correct Answer
(D) infinite quantity
Step-by-step Solution
Detailed explanation
Key Idea Change in current at saturation is
zero.
We know that plate resistance is given by
\(
r_{p}=\frac{\delta V}{\delta I}
\)
where \(\delta V\) is change in voltage and \(\delta I\) is change in current. Also, at saturation change in current is zero.
\(\therefore\)
\(
r_{p}=\frac{\delta V}{0}=\infty
\)
Hence, plate resistance will be infinite.
zero.
We know that plate resistance is given by
\(
r_{p}=\frac{\delta V}{\delta I}
\)
where \(\delta V\) is change in voltage and \(\delta I\) is change in current. Also, at saturation change in current is zero.
\(\therefore\)
\(
r_{p}=\frac{\delta V}{0}=\infty
\)
Hence, plate resistance will be infinite.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The inductive reactance of a coil is ' R ' \(\Omega\). If inductance of a coil is tripled and frequency of a.c supply is also tripled, then new inductive reactance will beMHT CET 2024 Easy
- 'N' number of balls of mass ' \(\mathrm{m}^{\prime} \mathrm{kg}\) moving along positive direction of \(\mathrm{x}\) - axis, strike
a wall per second and return elastically. The velocity of each ball is 'u' \(\mathrm{m} / \mathrm{s}\). The
force exerted on the wall by the balls in newton, isMHT CET 2020 Easy - In an a.c. circuit containing \(L, C\) and \(R\) in series, the ratio of apparent power to the true power is (Z and R are the impedance and resistance respectively, \(\phi=\) phase angle)MHT CET 2025 Easy
- Which of the following statements about the Bohr model of the hydrogen atom is false?MHT CET 2024 Easy
- Water is flowing in a conical tube as shown in figure. Velocity of water at area ' \(\mathrm{A}_2\) ' is \(60 \mathrm{~cm} / \mathrm{s}\). The value of ' \(\mathrm{A}_1\) ' and ' \(\mathrm{A}_2\) ' is \(10 \mathrm{~cm}^2\) and \(5 \mathrm{~cm}^2\) respectively. The pressure difference at both the cross-section is
MHT CET 2024 Medium - The relative angular speed of hour hand and minute hand of a clock is (in rad/s)MHT CET 2022 Medium
More PYQs from MHT CET
- What is the number of electrons passed through an electrolyte solution when 1 ampere current is passed for 16.1 minutes?MHT CET 2021 Medium
- Which from following reactions is exothermic?MHT CET 2025 Medium
- The work done in turning a magnet of magnetic moment ' M ' by an angle of \(90^{\circ}\) from the meridian is ' n ' times the corresponding work done to turn it through an angle of \(60^{\circ}\) where the value of ' \(n\) ' is \(\left(\cos 90^{\circ}=0, \cos 60^{\circ}=0.5\right)\)MHT CET 2025 Medium
- If side chain group \(-\mathrm{R}\) for amino acid is \(-\mathrm{CH}_{2} \mathrm{OH}\) identify the amino acid from following?MHT CET 2020 Easy
- In the following reaction,
Ethyl alcohol \(+\mathrm{H}^{+} \quad \frac{413 \mathrm{~K}}{\longrightarrow}\)
\(\begin{array}{ll}\text { (in excess) } & \text { (from } \mathrm{H}_{2} \mathrm{SO}_{4} \text { ) }\end{array}\)
product, the product isMHT CET 2009 Medium - The efficiency index of growth in plants represents ________.MHT CET 2025 Medium