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

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

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

3.Compare to the potential drop across an ammeter, the potential drop across a voltmeter is 1. Greater 2. Less 3. The same

4. Compared to the current through an ammeter, the current through a voltmeter is 1. Less 2. Greater 3. The same

5. Compared to the internal resistance of an ammeter, the internal resistance of a voltmeter is 1. Less 2. Greater 3. The same

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

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

9. As the current passing through the coil of a galvanometer decreased, the degree of deflection on the coil 1. Decreases 2. Increases 3. Remains the same

10. A device that converts electrical energy into rotational mechanical energy is a 1. Generator 2. Laser 3. Motor 4. Transformer

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

It allows for complete rotation of the armature core.

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 1. Less 2. Greater 3. The same

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? 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 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. If a stronger magnet is used, how will the magnetic force be effected?

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

17. As an electron is shot between a pair of oppositely charged parallel plates. Which plate does it arc towards? 1. Positive 2. Negative 3. Neither

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 1. Decreases 2. Increases 3. Remains the same

19. A device used to separate isotopes of the same element is called a 1. Laser 2. Mass spectrometer 3. Split-ring commutator 4. Transformer

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

21. During one complete rotation of the loop, the direction of the current in the loop on side A can be symbolized by 21. During one complete rotation of the loop, the direction of the current in the loop on side A can be symbolized by 1. Xxxxxxx 2. Ooooooo 3. Both xxx and oooo 4. Neither xxx or ooooo N S A

21. Looking at the momentary placement of the loop, the induced potential difference in the left side of the loop will be 21. Looking at the momentary placement of the loop, the induced potential difference in the left side of the loop will be 1. Xxxxxxx 2. Ooooooo 3. Both xxx and oooo 4. Neither xxx or ooooo N S

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.

22. What is the Potential difference across the secondary coil?

23. What is the current in the primary coil?

24. What is the power developed in the secondary coil?

We will do quick review tomorrow and then you will take your exam