JEE Physics 2024 Question with Solution

Given: The question asks to identify the electronic device from its I-V characteristics shown in the figure.

Find: Which device matches the given characteristic curve.

A Zener diode is identified by its reverse breakdown behavior. In the breakdown region, the voltage across it remains nearly constant while the current changes significantly. This property makes it useful as a voltage regulator.

From the solution text, the graph shows the characteristic feature of a Zener diode in the reverse breakdown region. It does not match a solar cell, a transistor used as an amplifier, or a rectifier diode.

Therefore, the correct option is C, Zener diode which can be used as a voltage regulator.

Given: An I-V characteristic curve of an electronic device is shown.

Find: Which listed device corresponds to this curve.

1. A solar cell gives a different I-V curve associated with photo-generated current.
2. A transistor has characteristic curves depending on configuration and operating mode, so it does not match this single reverse breakdown behavior.
3. A rectifier diode is mainly recognized by forward conduction, not by regulated reverse breakdown.
4. A Zener diode shows a sharp reverse breakdown region where voltage stays almost constant.

Hence, the graph corresponds to a Zener diode used as a voltage regulator.

So, the correct option is C.