The input characteristics of common emitter amplifier is the curve between base current $I_B$ and base-emitter voltage $V_{BE}$ at constant collector-emitter voltage $V_{CE}$.
The input characteristics can be determined by the circuit shown in figure. Keeping $V_{CE}$ constant (say at $0 V$), note the base current $I_B$ for various values of $V_{BE}$. Then, plot the readings obtained on the graph, taking $I_B$ along Y-axis and $V_{BE}$ along X-axis. This given the input characteristic at $V_{CE} = 0 V$. Following a similar procedure, a family of input characteristics can be drawn. These curves are similar to as shown in option (b )
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Top Questions on Semiconductor electronics: materials, devices and simple circuits
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
Lesser power losses.
Uses of Semiconductor:
Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.
