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Circuit Fundamentals Review: Current, Voltage, & Power Explained

Learn about current flow, voltage calculations, circuit types, resistor properties, and cost calculations in electrical circuits. Understand the differences between series and parallel circuits with practical examples. Master basic electrical concepts effortlessly.

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Circuit Fundamentals Review: Current, Voltage, & Power Explained

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Presentation Transcript

  1. Ch 8-9 Review

  2. What is the current flowing through this circuit? • 3 A

  3. In a circuit, 5 amperes of current passes through the light bulb. The resistance of the light bulb is 1.5 ohms. What is the voltage of the battery? • V = IR • 7.5 V

  4. If electricity costs 10 cents per kilowatt-hour, how much does it cost to run a 100-watt light bulb for one hour? • 100/1000=.1 x .1 = $.01

  5. Which figure(s) above is a parallel circuit? • I and II

  6. Calculate the total resistance of the series circuit if each resistor is 2 ohms. • 6 ohms

  7. What device designed to open an overloaded circuit and prevent overheating? • Circuit breaker or fuse

  8. The value of current is the same at all points in a ______circuit. • series

  9. A measure of the potential energy of an electric charge • voltage

  10. A material through which charges do not flow • insulator

  11. The flow of electric charges in a circuit • current

  12. The rate at which energy flows in a particular circuit • power

  13. Describe how you could quickly determine whether a string of lights is wired in series or in parallel. • Remove one bulb. If it's a series, all the lights will go out; if it's parallel, the remaining lights will stay lit.

  14. Which of the following is the correct relationship among power, current, and voltage? • a. P = I/V • b. V = P I • c. P = I V • d. E = P t • C

  15. The property of a material that allows charge to flow • Conductivity

  16. What electrical symbol is represented below? • resistor

  17. *** • Given an example of a series circuit. • Christmas lights

  18. What type of circuit is pictured? • series

  19. How many batteries are in the circuit below? • 2

  20. What electrical symbol is represented below? • Light bulb

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