MCQ
In a common emitter transistor circuit, the base current is $40 \,\mu A$, then $V_{B E}$ is .......... $V$
- A$2$
- ✓$0.2$
- C$0.8$
- D$0$
✓
Answer
Correct option: B.
$0.2$
b
(b)
(b)
Applying kirchoff
$10-245 \times 40 \times 10^{-3}=V_{B E}$
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
Binding energy per nucleon plot against the mass number for stable nuclei is shown in the figure. Which curve is correct
The circuit shown in following figure contains two diode $D_1$ and $D_2$ each with a forward resistance of $50$ ohms and with infinite backward resistance. If the battery voltage is $6 V$, the current through the $100$ ohm resistance (in amperes) is
→The radial magnetic field is used in a suspended coil galvanometer to provide:
The reactance of a coil when used in the domestic $ac$ power supply $(220\, volt,\, 50\, cycles)$ is $100\, ohm$. The self inductance of the coil is nearly........$henry$
→In $ac$ circuit when $ac$ ammeter is connected it reads $i$ current if a student uses $dc$ ammeter in place of $ac$ ammeter the reading in the $dc$ ammeter will be:
→In the below circuit, $C\, = \,\frac{{\sqrt 3 }}{2}\,\mu F,\,R = 20\,\,\Omega ,\,L = \frac{{\sqrt 3 }}{{10}}H$ and ${R_1} = 10\,\,\Omega .$ Current in $L-R_1$ path is $I_1$ and $C-R_2$ path is $I_2.$ The voltage of $A.C$ source is given by, $V\, = \,200\sqrt 2 \,\sin \,(100\,t)\,volts.$ The phase difference between $I_1$ and $I_2$ is
→The magnetic field of earth at the equator is approximately $4 \times 10^{-5}\, T$ . The radius of earth is $6.4 \times 10^6\, m$. Then the dipole moment of the earth will be nearly of the order of
→Which atom contains exactly $15$ neutrons?
→Characteristic of electromagnetic wave is shown by:
A concave mirror of radius of curvature $R$ has a circular outline of radius $r$. A circular disc is to be placed normal to the axis at the focus, so that it collects all the light that is reflected from the mirror from a beam parallel to the axis. For $r \ll R$, the area of this disc has to be at least
→