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Ohm’s Law and Circuits

Ohm’s Law and Circuits. (Answers on final slide). 1. The rate of charge flow in a circuit is known as …. Resistance Voltage Current Power Electrical Energy. [Default] [MC Any] [MC All].

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Ohm’s Law and Circuits

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  1. Ohm’s Law and Circuits (Answers on final slide)

  2. 1. The rate of charge flow in a circuit is known as … • Resistance • Voltage • Current • Power • Electrical Energy [Default] [MC Any] [MC All]

  3. 2. The potential difference between the ends of a wire that is required for current to flow is known as the… • Resistance • Voltage • Current • Power • Electrical Energy [Default] [MC Any] [MC All]

  4. 3. The opposition to current flow is called… • Resistance • Voltage • Current • Power • Electrical Energy [Default] [MC Any] [MC All]

  5. 4. Which of these statements are true about electric current? Choose all that apply. • The rate of charge flow • Measured in Ohms • Inversely related to resistance • Measured in Amperes • Requires an open circuit to flow • Requires a potential difference to flow • All of these statements are true • None of these statements are true. [Default] [MC Any] [MC All]

  6. 5. Which of the following are factors that affect resistance in a wire? Choose all that apply. • material • temperature • length • diameter • current flow • All of the above • None of the above [Default] [MC Any] [MC All]

  7. 6. Which statements are true for a series circuit? Choose all that apply. • Voltage is the same across all parts • Current is the same across all parts • Total resistance is the sum of the individual resistors • Individual currents add to equal the total current through the system • Individual voltages add to equal the total voltage put into the system • There is only one path for current to flow [Default] [MC Any] [MC All]

  8. 7. Which statements are true for a parallel circuit? Choose all that apply. • Voltage is the same across all parts • Current is the same across all parts • Total resistance is the sum of the individual resistors • Individual currents add to equal the total current through the system • Individual voltages add to equal the total voltage put into the system • There are branches of current [Default] [MC Any] [MC All]

  9. 8. Electrical energy can be measured in…(Choose all that apply) • Watts • Ohms • Joules • Kilowatt-hours • Watt seconds • Volts [Default] [MC Any] [MC All]

  10. 9. The relationship between current, voltage, and resistance in a circuit is known as… • Coulomb’s Law • Kirchoff’s Law • Ampere’s Law • Ohm’s Law [Default] [MC Any] [MC All]

  11. 10. If you build circuit A and then add a resistor as in circuit B, the light will • Look brighter • Look less bright • There will no change in brightness A B

  12. 11. Which shows the correct way to use an ammeter? A B

  13. 12. Which resistor will have the greatest current? • 50  • 10  • They have the same current

  14. 13. Which resistor will have the greatest voltage? • 50  • 10  • They have the same voltage

  15. 14. Which resistor will have the greatest current? • 50  • 10  • They have the same current

  16. 15. What is the total resistance in this circuit? • 6.4  • 21  • 38  • 75 

  17. 16. What is the total resistance in this circuit? • 6.4  • 21  • 38  • 75 

  18. Answers 9. D 10. B 11. B 12. B 13. C 14. C 15. C 16. B • C • B • A • ACDF • ABCD • BCEF • ADF • CDE

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