(14) Semiconductor Electronics
Master the most recurring derivations, numericals, and core conceptual problems asked by CBSE across 2026–2022 board exam sets.
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(a) (i) Draw the circuit diagram used to study $I - V$ characteristics of a p-n junction diode in conducting mode. Mark on the graph the threshold vol...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔With the help of circuit diagrams, briefly explain the forward biasing and the reverse biasing of a p-n junction diode....
VIEW FULL SOLUTION & BOARD VARIATIONS ➔With the help of a circuit diagram, explain the working of a full wave rectifier. Depict the input and output waveforms....
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Draw a labelled diagram of a full wave rectifier circuit. State its working principle and show the input-output waveforms....
VIEW FULL SOLUTION & BOARD VARIATIONS ➔(a) What are majority and minority charge carriers of p-type and n-type semiconductors ? (b) Explain briefly the formation of diffusion current and dr...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔(a) Draw the energy-band diagrams for conductors, semiconductors and insulators at $\text{T} = 0\text{ K}$. How is an electron-hole pair formed in a s...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Differentiate between half-wave and full-wave rectification. With the help of a circuit diagram, explain the working of a full-wave rectifier....
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Explain the process of formation of 'depletion layer' and 'potential barrier' in a p-n junction region of a diode, with the help of a suitable diagram...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔(a) Draw circuit arrangement for studying V-I characteristics of a p-n junction diode. (b) Show the shape of the characteristics of a diode. (c) Menti...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔With the help of a circuit diagram, explain the working of a p-n junction diode as a full-wave rectifier. Also draw its input and output waveforms....
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Write two points of difference between intrinsic and extrinsic semiconductors....
VIEW FULL SOLUTION & BOARD VARIATIONS ➔The hole concentration in an intrinsic semiconductor is $5 \times 10^8 \text{ m}^{-3}$. When it is doped with certain impurity, the electron concentra...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔In an intrinsic semiconductor, carrier's concentration is $5 \times 10^8 \text{ m}^{-3}$. On doping with impurity atoms, the hole concentration become...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔In an n-type semiconductor electron-hole combination is a continuous process at room temperature. Yet the electron concentration is always greater tha...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Draw energy band diagrams of n-type and p-type semiconductors at temperature $T > 0\text{ K}$. Show the donor/acceptor energy levels with the order of...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Draw energy band diagrams of n-type and p-type semiconductors at temperature $T > 0\text{K}$, depicting the donor and acceptor energy levels. Mention ...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Explain the formation of depletion region in a p-n junction....
VIEW FULL SOLUTION & BOARD VARIATIONS ➔When the forward bias voltage in a semiconductor diode is changed from $0\cdot8\text{ V}$ to $1\cdot0\text{ V}$, the forward current changes by $2\cdo...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔In a reversed-biased p-n junction diode, the applied voltage mostly drops across : (A) p-region only (B) n-region only (C) depletion region (D) the di...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔Assertion (A): The conductivity of an n-type semiconductor is higher than that of a p-type semiconductor at a given temperature. Reason (R): The elect...
VIEW FULL SOLUTION & BOARD VARIATIONS ➔