When a battery is connected to a `P`-type semiconductor with a metallic wire, the current in the semiconductor (predominantly), inside the metallic wire and that inside the bettery respectively due to

Options

A. Holes, ions, electrons
B. Ions, electrons, holes
C. Electrons, ions, holes
D. Holes, electrons, ions

Answer

D

Explanation

In the p-type semiconductor, the holes are the majority charge carriers. Inside the conducting wire, free electrons are the charge carriers while in a battery ( cell), ions are the charge carriers. Thus the correct sequence is holes, electrons, ions.