JEE Mains · Physics · STD 12 - 14. Semicondutor electronics
Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode \(D _1\) in the circuit is ___________mA . (Assume all diodes in the given circuit are identical)
- A 20.15
- B 11.7
- C 17.6
- D 18.8
Answer & Solution
Correct Answer
(D) 18.8
Step-by-step Solution
Detailed explanation
\(12-0.3 \times 10^3 I -0.7=0\) \(\frac{11.3}{0.3 \times 10^3}= I\) \(37.66 \times 10^{-3} A= I\) Current through diode \(D _1, I _1= I / 2\) \(I _1=18.83 mA\)
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
- Consider a sphere of radius \(\mathrm{R}\) which carries a uniform charge density \(\rho .\) If a sphere of radius \(\frac{\mathrm{R}}{2}\) is carved out of it, as shown, the ratio \(\frac{\left|\overrightarrow{\mathrm{E}}_{\mathrm{A}}\right|}{\left|\overrightarrow{\mathrm{E}}_{\mathrm{B}}\right|}\) of magnitude of electric field \(\overrightarrow{\mathrm{E}}_{\mathrm{A}}\) and \(\overrightarrow{\mathrm{E}}_{\mathrm{B}}\) respectively, at points \(\mathrm{A}\) and \(\mathrm{B}\) due to the remaining portion is
JEE Mains 2020 Hard - What will be the nature of flow of water from a circular tap, when its flow rate increased from \(0.18\, L / min\) to \(0.48\, L / min\) ? The radius of the tap and viscosity of water are \(0.5\, cm\) and \(10^{-3}\, Pa s\), respectively. (Density of water : \(10^{3}\, kg / m ^{3}\) )JEE Mains 2021 Medium
- A proton and an \(\alpha -\) particle (with their masses in the ratio of \(1 : 4\) and charges in the ratio of \(1:2\) are accelerated from rest through a potential difference \(V\). If a uniform magnetic field \((B)\) is set up perpendicular to their velocities, the ratio of the radii \(r_p : r_{\alpha }\) of the circular paths described by them will beJEE Mains 2019 Medium
- A metal surface is illuminated by a radiation of wavelength \(4500 \; \mathring A\). The ejected photo-electron enters a constant magnetic field of \(2 \; mT\) making an angle of \(90^{\circ}\) with the magnetic field. If it starts revolving in a circular path of radius \(2 \; mm\), the work function of the metal is approximately ............. \(eV\)JEE Mains 2022 Hard
- A circular disc has radius \(R_1\) and thickness \(T_1\). Another circular disc made of the same material has radius \(R_2\) and thickness \(T_2\). If the moment of inertia of both discs are same and \(\frac{R_1}{R_2}=2\) then \(\frac{T_1}{T_2}=\frac{1}{\alpha}\).The value of \(\alpha\) is __________ .JEE Mains 2026 Hard
- A convex lens of focal length 30 cm is placed in contact with a concave lens of focal length 20 cm. An object is placed at 20 cm to the left of this lens system. The distance of the image from the lens in cm is ________JEE Mains 2025 Easy
More PYQs from JEE Mains
- The number of integral values of \(m\) for which the equation \((1 + m^2) x^2 - 2(1 + 3m) x + (1 + 8m) = 0\) has no real root isJEE Mains 2019 Hard
- \(1\,g\) of a liquid is converted to vapour at \(3 \times 10^5\,Pa\) pressure. If \(10 \%\) of the heat supplied is used for increasing the volume by \(1600\,cm ^3\) during this phase change, then the increase in internal energy in the process will be \(............\,J\)JEE Mains 2023 Medium
- If \(\mathrm{n}\) is the number density and \(\mathrm{d}\) is the diameter of the molecule, then the average distance covered by a molecule between two successive collisions (i.e. mean free path) is represented by _______.JEE Mains 2024 Hard
- Let for a triangle \(ABC\), \(\overline{A B}=-2 \hat{i}+\hat{j}+3 \hat{k}\) \(\overline{C B}=\alpha \hat{i}+\beta \hat{j}+\gamma \hat{k}\) \(\overline{C A}=4 \hat{i}+3 \hat{j}+\delta \hat{k}\) If \(\delta > 0\) and the area of the triangle \(ABC\) is \(5 \sqrt{6}\), then \(\overline{C B} \cdot \overline{C A}\) is equal toJEE Mains 2023 Hard
- Let \(z _{1}\) and \(z _{2}\) be two complex numbers such that \(\overline{ z }_{1}=i \overline{ z }_{2}\) and \(\arg \left(\frac{ z _{1}}{\overline{ z }_{2}}\right)=\pi\). ThenJEE Mains 2022 Medium
- Let \(ABCD\) be a square of side of unit length. Let a circle \(C _{1}\) centered at \(A\) with unit radius is drawn. Another circle \(C _{2}\) which touches \(C _{1}\) and the lines \(AD\) and \(AB\) are tangent to it, is also drawn. Let a tangent line from the point \(C\) to the circle \(C _{2}\) meet the side \(AB\) at \(E\). If the length of \(EB\) is \(\alpha+\sqrt{3} \beta,\) where \(\alpha, \beta\) are integers, then \(\alpha+\beta\) is equal to.........JEE Mains 2021 Hard