List of top Physics Questions on Solid State Physics, Devices, Electronics

A transistor (β=100, 𝑉𝐵𝐸 = 0.7𝑉) is connected as shown in the circuit below.

The current IC will be mA. (Rounded off to two decimal places)

A Zener diode (rating 10V, 2W) and a normal diode (turn-on voltage 0.7V) are connected in a circuit as shown in the figure. The voltage drop 𝑉_𝐿 across the 2kΩ resistance is ____V. (Rounded off to one decimal place)

A charge of −9C is placed at the center of a concentric spherical shell made of a linear dielectric material (relative permittivity 9) and having inner and outer radii of 0.1m and 0.2m, respectively. The total charge induced on its inner surface is ______C. (Rounded off to two decimal place)

Consider a p-n junction diode which has 10²³ acceptor-atoms/m³ in the p-side and 10²² donor-atoms/m³ in the n-side. If the depletion width in the p-side is 0.16µm, then the value of depletion width in the n-side will be ______µm. (Rounded off to one decimal place)

For the LCR AC-circuit (resonance frequency ω_o) shown in the figure below, choose the correct statement(s).

In the following OP-AMP circuit, 𝑣_𝑖𝑛 and 𝑣_𝑜𝑢𝑡 represent the input and output signals, respectively.

Choose the correct statement(s):

A pure Si crystal can be converted to an n-type crystal by doping with

Consider the following logic circuit.

The output Y is LOW when:

In an extrinsic p-type semiconductor, which of the following schematic diagram depicts the variation of the Fermi energy level (E_F) with temperature (T) ?

For the given operational amplifier circuit R₁ = 120 Ω, R₂ = 1.5 k and V_s = 0.6 V, then the output current I₀ is ____mA.

For the given circuit, R = 125 Ω, R_L = 470 Ω, V_z = 9V, and $I_z^{max}$= 65 mA. The minimum and maximum values of the input voltage ($V_i^{min}\ and\ V_i^{max}$) for which the Zener diode will be in the 'ON' state are

For an n-type silicon, an extrinsic semiconductor, the natural logarithm of normalized conductivity (σ) is plotted as a function of inverse temperature. Temperature interval-I corresponds to the intrinsic regime, interval-II corresponds to saturation regime and interval-III corresponds to the freeze-out regime, respectively. Then

For an ideal intrinsic semiconductor, the Fermi energy at 0 K

The number of molecules present in the unit cell of sodium chloride is:

If $E_H$, $J_x$ and $B_z$ are the Hall field, current density and magnetic field strength respectively, then Hall coefficient is given by:ॉॉ