MCQ
A transistor is operating in the active mode. $v_1$ is potential barrier across base emitter junction and $v_2$ is potential barrier across collector base junction. $b_1$ is width of depletion layer of base emitter junction and $b_2$ is width of collector base junction.
  • A
    $v_1 > v_2, b_1 > b_2$
  • B
    $v_1 < v_2, b_1 < b_2$
  • $v_1 > v_2, b_1 < b_2$
  • D
    $v_1 < v_2, b_1 > b_2$

Answer

Correct option: C.
$v_1 > v_2, b_1 < b_2$
c

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A solid sphere of radius $R$ has moment of inertia $I$ about its geometrical axis. It is melted into a disc of radius $r$ and thickness $t$. If it's moment of inertia about the tangential axis (which is perpendicular to plane of the disc), is also equal to $I,$ then the value of $r$ is equal to
Which of the following is deflected by electric field
In the circuit shown in the figure $K_1$ is open. The charge on capacitor $C$ in steady state is $q_1$. Now key is closed and at steady state charge on $C$ is $q_2$. The ratio of charges $q_1/q_2$ is
In a coil of resistance $100\ \Omega$ , a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is......$Wb$
Two long straight wires $P$ and $Q$ carrying equal current $10\,A$ each were kept parallel to each other at $5\,cm$ distance. Magnitude of magnetic force experienced by $10\,cm$ length of wire $P$ is $F_1$. If distance between wires is halved and currents on them are doubled, force $F_2$ on $10\,cm$ length of wire $P$ will be :
In the above question, if another body is at rest, then velocity of the compound body after collision is
A ball of $0.4\,kg$ mass and a speed of $3\, m/s$ has a head-on, completely elastic  collision with a $0.6-kg$ mass initially at rest. Find the speeds of both balls after the  collision:
Consider a liquid contained in a vessel. The liquid solid adhesive force is very weak as compared to the cohesive force in the liquid. The shape of the liquid surface near the solid shall be
In the circuit shown in the figure, there are two parallel plate capacitors each of capacitance $C$. The switch $S _1$ is pressed first to fully charge the capacitor $C_1$ and then released. The switch $S_2$ is then pressed to charge the capacitor $C _2$. After some time, $S _2$ is released and then $S _3$ is pressed. After some time.

$(A)$ the charge on the upper plate of $C _1$ is $2 CV _0$

$(B)$ the charge on the upper plate of $C _1$ is $CV _0$

$(C)$ the charge on the upper plate of $C _2$ is $0$

$(D)$ the charge on the upper plate of $C _2$ is $- CV _0$

The motion of planets in the solar system is an example of the conservation of