Review Game Eureeka

1. Review Game Eureeka Obtain a board, marker, wipey-thing and partner

2. 1. Draw a series circuit containing at least two resistors and a battery

3. Add an ammeter and a voltmeter to correctly measure quantities in your circuit

4. Compare to the potential drop across an ammeter, the potential drop across a voltmeter is • Greater • Less • The same

5. 4. Compared to the current through an ammeter, the current through a voltmeter is • Less • Greater • The same

6. 5. Compared to the internal resistance of an ammeter, the internal resistance of a voltmeter is • Less • Greater • The same

7. Complete the following sentence: • 6. An ammeter is a galvanometer with . . . A low resistance in parrallel • 7. A Voltmeter is a galvanometer with . . . A high resistance in series

8. 8. The function of the iron core in the galvanometer is to . . . • Magnify the strength of the magnetic field

9. 9. As the current passing through the coil of a galvanometer decreased, the degree of deflection on the coil • Decreases • Increases • Remains the same

10. 10. A device that converts electrical energy into rotational mechanical energy is a • Generator • Laser • Motor • Transformer

11. 11. What does the split-ring commutator in a motor do?

12. It allows for complete rotation of the armature core.

13. 12. As the armature of an operating electric motor rotates, a back EMF is induced in the armature. Compared to the applied EMF, the net EMF in the armature is • Less • Greater • The same

14. Refer to the picture on the board for the following (note to self, it’s a loop in a B-field) • 13. The magnetic force on the loop at P is in which direction? • 14. If the current in the loop increases what will happen to the magnetic force on the loop • 15. If a stronger magnet is used, how will the magnetic force be effected?

15. 16. A device used to measure a WEAK current is called a . . . ? • GALVANOMETER

16. 17. As an electron is shot between a pair of oppositely charged parallel plates. Which plate does it arc towards? • Positive • Negative • Neither

17. 18. An electron located between two oppositely charged parallel plates is accelerating toward the + plate. As the Voltage between the plated decreases, the acceleration of the electron • Decreases • Increases • Remains the same

18. 19. A device used to separate isotopes of the same element is called a • Laser • Mass spectrometer • Split-ring commutator • Transformer

19. 20. Who determined the charge of an electron? Milikin In his oil-drop experiment

20. N S A • 21. During one complete rotation of the loop, the direction of the current in the loop on side A can be symbolized by • Xxxxxxx • Ooooooo • Both xxx and oooo • Neither xxx or ooooo

21. N S • 21. Looking at the momentary placement of the loop, the induced potential difference in the left side of the loop will be • Xxxxxxx • Ooooooo • Both xxx and oooo • Neither xxx or ooooo

22. The primary coil of a transformer with an efficiency of 100% has 200. turns and its secondary coil has 50. turns. The primary coil is connected to a 120-V AC Power supply and develops 600-W of Power.

23. 22. What is the Potential difference across the secondary coil? 30-V

24. 23. What is the current in the primary coil? 5-A

25. 24. What is the power developed in the secondary coil? 600-W

26. We will do quick review tomorrowand then you will take your exam