Free Basic Electronics & Circuitry Questions and Answers

Question 1

What does the abbreviation 'DC' stand for in electronics?

Accepted Answer

Direct Current

Answer

In electronics, 'DC' stands for Direct Current. This refers to electrical current that flows in only one direction, typically produced by sources like batteries, solar cells, and rectified AC power supplies.

Question 2

What is the basic unit of electrical resistance?

Accepted Answer

Ohm

Answer

The basic unit of electrical resistance is the Ohm (Ω). Resistance quantifies how much a material or component opposes the flow of electric current, and it is a fundamental concept in Ohm's Law.

Question 3

Which component stores electrical energy in an electric field?

Accepted Answer

Capacitor

Answer

A capacitor is an electronic component specifically designed to store electrical energy in an electric field. It consists of two conductive plates separated by an insulating material called a dielectric.

Question 4

What device converts AC to DC?

Accepted Answer

Rectifier

Answer

A rectifier is an electronic device that converts alternating current (AC), which periodically reverses direction, into direct current (DC), which flows in only one direction. This process is essential for powering most electronic devices from AC mains.

Question 5

What is the function of a resistor?

Accepted Answer

Limit current

Answer

The primary function of a resistor is to limit or oppose the flow of electric current in a circuit. By introducing resistance, it controls the amount of current and voltage within different parts of an electronic circuit.

Ham Radio Technician Test Practice Test

Ham Radio Technician Test Practice Test

Free Basic Electronics & Circuitry Questions and Answers