JEE Physics - MCQ Practice Questions

The diode equation for current through a p-n junction is I = I_s(e^(qV/kT) - 1). Here, I_s is:

In a BJT operating in active mode, which of the following is correct?

In a MOSFET, the threshold voltage V_T increases with:

In an n-channel MOSFET operating in saturation region, the drain current is approximately:

The transconductance g_m of a MOSFET in saturation is:

Which semiconductor material has the highest electron mobility at room temperature?

In a light-emitting diode (LED), the color of emitted light depends primarily on:

A solar cell operates as a p-n junction under illumination. The maximum power output occurs at:

In a p-n junction diode, the depletion width is primarily determined by which of the following factors?

A photodiode is reverse-biased to operate in photoconductive mode. What is the primary advantage of this configuration over photovoltaic mode?