9 Questions
The flow of electric charge is called ______
current
Question 1
Explain the difference between AC and DC current, and provide an example of each.
Answer 1
AC, or alternating current, is a type of electrical current that periodically changes direction, while DC, or direct current, flows continuously in one direction. An example of AC is the electricity supplied to homes and businesses, while an example of DC is the electricity stored in batteries.
A device that converts electrical energy into mechanical energy is called a ______
motor
The unit of electric power is ______
watt
Question 2
What is the purpose of a capacitor in an electric circuit, and how does it work?
Answer 2
A capacitor is an electrical component that stores energy in an electric field. Its main purpose is to temporarily hold a charge and release it when needed. It works by allowing electrical charge to build up on two conductive plates separated by an insulating material, such as air or plastic.
Question 3
Explain the function of a transistor in an electric circuit, and provide an example of its use.
Answer 3
A transistor is a semiconductor device that can amplify or switch electronic signals. Its main function is to control the flow of current in a circuit. An example of its use is in an audio amplifier, where it is used to amplify the small electrical signals from a microphone or a guitar pickup.
Study Notes
"Test your knowledge on electric circuits and components with our 20-question quiz! Designed for 16-year-olds, this quiz covers topics such as analysis circuit diagrams, capacitors, inductors, LED, diodes, transistors, relays, switches, and more. You'll also be tested on your understanding of electricity usage by consumers, different types of current, and the various uses of electrical energy. Perfect for students studying electrical engineering or anyone interested in learning more about electric circuits,
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