MCQ
In the given figure potential difference between $A$ and $B$ is :-............. $V$
- A$0$
- B$5$
- ✓$10$
- D$15$
✓
Answer
Correct option: C.
$10$
c
Since diode in forward bias so it behaves as short circuit.
Since diode in forward bias so it behaves as short circuit.
$\therefore$ equivalent resistance of circuit
$=\left(10+\frac{10 \times 10}{10+10}\right) \mathrm{k} \Omega=15 \mathrm{k} \Omega$
$\therefore$ current through cell $ = \frac{{30}}{{15}}\frac{V}{{{\rm{k}}\Omega }} = 2\,{\rm{mA}}$
$\therefore$ current between $\mathrm{A}$ and $\mathrm{B}=1 \mathrm{\,mA}$
$\therefore V_{A B}=10 \mathrm{\,k} \Omega \times 1 \mathrm{\,mA}=10 \mathrm{\,V}$
$\therefore(3)$
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
Similar questions
In a triclinic crystal system
Assertion $(A):$ The relation among $u , v$ and $f$ for the spherical mirror is valid only for mirrors whose sizes are very small compared to their radii of curvature.
→Reason $(R):$ The laws of reflection are strictly valid for plane surfaces but not for large spherical surfaces.
In which case does the potential energy decrease
A stone projected at an angle of $60^o$ from the ground level strikes at an angle of $30^o$ on the roof of a building of height $‘h= 30\,m ’$ . Find the speed of projection(in $m/s$ ) of the stone
→In the circuit shown below, the cell has an $e.m.f.$ of $10\,V$ and internal resistance of $1\, ohm$. The other resistances are shown in the figure. The potential difference ${V_A} - {V_B}$ is ................ $V$
→The materials suitable for making electromagnets should have
In an ideal transformer, the turns ratio is $\frac{N_p}{N_S}=\frac{1}{2}$. The ratio $V_s: V_p$ is equal to (the symbols carry their usual meaning):
→A carrier wave with amplitude of $250\, {V}$ is amplitude modulated by a sinusoidal base band signal of amplitude $150\, {V}$. The ratio of minimum amplitude to maximum amplitude for the amplitude modulated wave is $50: {x}$, then value of ${x}$ is ....... .
→An ammeter whose resistance is $180\,\Omega $ gives full scale deflection when current is $2\, mA$. The shunt required to convert it into an ammeter reading $20\, mA$ (in $ohms$) is
→A system to $10$ balls each of mass $2 \; kg$ are connected via massless and unstretchable string. The system is allowed to slip over the edge of a smooth table as shown in figure. Tension on the string between the $7^{th}$ and $8^{th}$ ball is $N$ when $6^{th}$ ball just leaves the table.
→