MCQ
In forward bias, the width of potential barrier in a $P-N$ junction diode
- AIncreases
- ✓Decreases
- CRemains constant
- DFirst increases then decreases
✓
Answer
Correct option: B.
Decreases
b
(b)In forward biasing width of depletion layer decreases.
(b)In forward biasing width of depletion layer decreases.
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
$n$ identical bulbs, each designed to draw a power $p$ from a certain voltage supply, are joined in series across that supply. The total power which they will draw is
→An aluminium ring $B$ faces an electromagnet $A$. The current $I$ through $A$ can be altered. Then which of the following statement is correct
→One quality of a thermometer is that its heat capacity should be small. If $P$ is a mercury thermometer, $Q$ is a resistance thermometer and $R$ thermocouple type then
→An archaeologist analyses the wood in a prehistoric structure and finds that ${C^{14}}$ (Half life $= 5700\, years$) to ${C^{12}} $ is only one- fourth of that found in the cells buried plants. The age of the wood is about ........$years$
→Consider the junction diode as ideal. The value of current flowing through $AB$ is
→Three containers of the same volume contain three different gases. The masses of the molecules are ${m_1},\,{m_2}$ and ${m_3}$ and the number of molecules in their respective containers are ${N_1},\,{N_2}$ and ${N_3}$. The gas pressure in the containers are ${P_1},\,{P_2}$ and ${P_3}$ respectively. All the gases are now mixed and put in one of the containers. The pressure $P$ of mixture will be
→The mass of the body is $10.000\,g$ and its volume is $10.00\,cm^3$. If the measured values are expressed upto the correct significant figures, the maximum error in the measurement of density is
→Electric charge is transferred to an irregular metallic disk as shown in figure. If $\sigma_{1}, \sigma_{2}, \sigma_{3}$ and $\sigma_{4}$ are charge densities at given points then, choose the correct answer from the options given below:
(A) $\sigma_{1}>\sigma_{3} ; \sigma_{2}=\sigma_{4}$
(B) $\sigma_{1}>\sigma_{2} ; \sigma_{3}>\sigma_{4}$
(C) $\sigma_{1}>\sigma_{3}>\sigma_{2}=\sigma_{4}$
(D) $\sigma_{1}<\sigma_{3}<\sigma_{2}=\sigma_{4}$
(E) $\sigma_{1}=\sigma_{2}=\sigma_{3}=\sigma_{4}$
→(A) $\sigma_{1}>\sigma_{3} ; \sigma_{2}=\sigma_{4}$
(B) $\sigma_{1}>\sigma_{2} ; \sigma_{3}>\sigma_{4}$
(C) $\sigma_{1}>\sigma_{3}>\sigma_{2}=\sigma_{4}$
(D) $\sigma_{1}<\sigma_{3}<\sigma_{2}=\sigma_{4}$
(E) $\sigma_{1}=\sigma_{2}=\sigma_{3}=\sigma_{4}$
Find the change in the entropy in the following process $100 \,gm$ of ice at $0°C$ melts when dropped in a bucket of water at $50°C$ (Assume temperature of water does not change) ..... $ cal/K$
→A star is moving towards the earth with a speed of $4.5 \times {10^6}$m/s. If the true wavelength of a certain line in the spectrum received from the star is $5890 Å$, its apparent wavelength will be about........$\mathop A\limits^o $ $[c = 3 \times {10^8}m/s]$
→