MCQ
In the circuit shown in Fig., if the diode forward voltage drop is $0.3V,$ the voltage difference between $A$ and $B$ is: 
- A$1.3V.$
- ✓$2.3V.$
- C$0.$
- D$0.5V.$
✓
Answer
Correct option: B.
$2.3V.$
If $V$ is the potential difference between $A$ and $B$, then according to the questions and using Kirchhoff’s law, we have
$V-0.3=\left[(5+5) 10^3\right] \times\left(0.2 \times 1\left(10^{-3}\right)\right)$
$\Rightarrow V-0.3=\left[(5+5) 10^3\right] \times\left(0.2 \times 10^{-3}\right)$
$\Rightarrow V-0.3=10 \times 10^3 \times 0.2 \times 10^{-3}=2$
$\Rightarrow V=2+0.3=2.3 V$
$V-0.3=\left[(5+5) 10^3\right] \times\left(0.2 \times 1\left(10^{-3}\right)\right)$
$\Rightarrow V-0.3=\left[(5+5) 10^3\right] \times\left(0.2 \times 10^{-3}\right)$
$\Rightarrow V-0.3=10 \times 10^3 \times 0.2 \times 10^{-3}=2$
$\Rightarrow V=2+0.3=2.3 V$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
More "M.C.Q (1 Marks)" from Semiconductor Electronic: Material, Devices And Simple Circuits→Semiconductor Electronic: Material, Devices And Simple Circuits — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→
Similar questions
Twelve wires of equal length and same cross-section are connected in the form of a cube. If the resistance of each of the wires is R, then the effective resistance between the two diagonal ends would be
The self inductance of a coil is 5 henry, a current of 1 amp change to 2 amp within 5 second through the coil. The value of induced e.m.f. will be
A man suffering from myopia can read a book placed at 10 cm distance. For reading the book at a distance of 60 cm with relaxed vision, focal length of the lens required will be
A fixed horizontal wire carries a current of $200\, A$. Another wire having a mass per unit length ${10^{ - 2}}\,kg/m$ is placed below the first wire at a distance of $2\, cm$ and parallel to it. How much current must be passed through the second wire if it floats in air without any support? What should be the direction of current in it
→Figure shows charge $(q)$ versus voltage $(V)$ graph for series and parallel combination of to given capacitors. The capacitances are
→When ultraviolet rays incident on a metal surface, it causes no photoelectric effect but will occur due to incident of the following :
The energy stored in a $50 \,mH$ inductor carrying a current of $4 \,A$ will be....$J$
→In the figure given below, the current passing through $6\,\Omega $ resistor is ........... $ampere$
→When light of wavelength λ is incident on an equilateral prism kept in its minimum deviation position, it is found that the angle of deviation equals the angle of the prism itself. The refractive index of the material of the prism for the wavelength λ is, then
To charges $q_1$ and $q_2$ are placed 30 cm apart, shown in the figure. A third charge $q_3$ is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is $\frac{\mathrm{q}_{\mathrm{g}}}{4 \pi \varepsilon_0} \mathrm{k}$, where k is
→