Question

The arrow in the symbol of a transistor indicates _________.
A) Base
B) Direction of electric current
C) Direction of conventional current
D) Both (1) and (3)

Answer 1

Hint: A transistor is a gadget made of extraneous semiconductor, utilized as a speaker, switches, an oscillator, balanced out force supplies, coordinated circuits.

Complete step by step solution:
The arrow indicates the direction of flow of holes i.e. the direction of conventional current, opposite to the flow of electrons in a transistor. Transistor directs current or voltage stream and goes about as a switch or door for electronic signs. Semiconductors comprise three layers of a semiconductor material, each fit for conveying a current.

The transistor was designed by three researchers at the Bell Laboratories in 1947, and it quickly supplanted the vacuum tube as an electronic sign controller. A semiconductor manages current or voltage stream and goes about as a switch or door for electronic signs.

A semiconductor comprises three layers of a semiconductor material, each fit for conveying a current. A semiconductor is a material, for example, germanium and silicon that conducts power in a "semi-eager" way. It's somewhere close to a genuine channel, for example, copper and a separator (like the plastic folded over wires).

Additional information: The semiconductor material is given extraordinary properties by a compound cycle called doping. The doping brings about a material that either adds additional electrons to the material (which is then called N-type for the additional negative charge transporters) or makes "openings" in the material's gem structure (which is then called P-type since it brings about more certain charge transporters). The semiconductor's three-layer structure contains a N-type semiconductor layer sandwiched between P-type layers (a PNP arrangement) or a P-type layer between N-type layers (a NPN design).

Note: The semiconductor is partitioned into two sorts. One is Intrinsic Semiconductor and other is an Extrinsic semiconductor. The unadulterated type of the semiconductor is known as the intrinsic semiconductor and the semiconductor in which purposefully debasements is included for making it conductive is known as the extrinsic semiconductor.