Which of the Following is a Semiconductor? 1. Wood 2. Phosphorus 3. Silicon 4. Glass

By BYJU'S Exam Prep

Updated on: November 9th, 2023

Silicon is a semiconductor. The material whose electrical conductivity falls between a conductor and an insulator is called a semiconductor. The components, such as diodes and transistors, are made of semiconductors. It is essential equipment for many electronic appliances. Germanium (Ge) along with Silicon (Se) are two examples of commonly used semiconductors. These substances are used in various devices such as computers, laser diodes, etc.

What is a Semiconductor?

The semiconductor devices possess various properties like passing current more easily in one direction than the other, showing variable resistance, and having sensitivity to light or heat. The electrical properties of a semiconductor can be modified by doping, and by the application of electrical fields or light, devices made from semiconductors can be used for amplification, switching, and energy conversion. Thus, they are extremely useful.

Properties of Semiconductor

The following are the properties of semiconductors:

  • They have variable electrical conductivity.
  • They have a negative temperature coefficient of resistance.
  • Its resistivity is more than the insulator and less than a conductor.
  • On doping, they behave like a conducting material and allow the current to pass through them.


Which of the following is a Semiconductor?

Semiconductor is Silicon. Semiconductors are materials that have a conductivity of electricity only under specific conditions. Semiconductors have a filled valance band, empty conduction, and a small energy gap. It is because the energy required by these two materials to release electrons from their valance band is too small. There are many uses for semiconductors, like energy conversion, switching, and amplification.

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