Review Game EureekaReview Game Eureeka

Obtain a board, marker, wipey-thing Obtain a board, marker, wipey-thing and partnerand partner

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

2.2. Add an ammeter and a Add an ammeter and a voltmeter to correctly measure voltmeter to correctly measure

quantities in your circuitquantities in your circuit

3.3. Compare to the potential drop Compare to the potential drop across an ammeter, the potential across an ammeter, the potential

drop across a voltmeter isdrop across a voltmeter is

1.1. GreaterGreater

2.2. LessLess

3.3. The sameThe same

4. Compared to the current through 4. Compared to the current through an ammeter, the current through a an ammeter, the current through a

voltmeter is voltmeter is

1.1. LessLess

2.2. GreaterGreater

3.3. The sameThe same

5. Compared to the internal 5. Compared to the internal resistance of an ammeter, the resistance of an ammeter, the

internal resistance of a voltmeter is internal resistance of a voltmeter is

1.1. LessLess

2.2. GreaterGreater

3.3. The sameThe same

Complete the following sentence:Complete the following sentence:

6. An ammeter is a galvanometer with . . . 6. An ammeter is a galvanometer with . . .

A low resistance in parrallelA low resistance in parrallel

7. A Voltmeter is a galvanometer with . . . 7. A Voltmeter is a galvanometer with . . .

A high resistance in seriesA high resistance in series

8. The function of the iron core in 8. The function of the iron core in the galvanometer is to . . .the galvanometer is to . . .

Magnify the strength of the magnetic fieldMagnify the strength of the magnetic field

9. As the current passing through 9. As the current passing through the coil of a galvanometer decreased, the coil of a galvanometer decreased,

the degree of deflection on the coilthe degree of deflection on the coil

1.1. DecreasesDecreases2.2. IncreasesIncreases3.3. Remains Remains

the samethe same

10. A device that converts electrical 10. A device that converts electrical energy into rotational mechanical energy into rotational mechanical

energy is a energy is a 1.1. GeneratorGenerator

2.2. LaserLaser

3.3. MotorMotor

4.4. TransformerTransformer

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

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

12. As the armature of an operating 12. As the armature of an operating electric motor rotates, a back EMF electric motor rotates, a back EMF

is induced in the armature. is induced in the armature. Compared to the applied EMF, the Compared to the applied EMF, the

net EMF in the armature is net EMF in the armature is

1.1. LessLess

2.2. GreaterGreater

3.3. The sameThe same

Refer to the picture on the board for Refer to the picture on the board for the following (note to self, it’s a loop the following (note to self, it’s a loop

in a B-field)in a B-field) 13. The magnetic force on the loop at P is in 13. The magnetic force on the loop at P is in

which direction?which direction? 14. If the current in the loop increases what 14. If the current in the loop increases what

will happen to the magnetic force on the loopwill happen to the magnetic force on the loop 15. If a stronger magnet is used, how will the 15. If a stronger magnet is used, how will the

magnetic force be effected?magnetic force be effected?

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

GALVANOMETERGALVANOMETER

17. As an electron is shot between a 17. As an electron is shot between a pair of oppositely charged parallel pair of oppositely charged parallel

plates. Which plate does it arc plates. Which plate does it arc towards?towards?

1.1. PositivePositive

2.2. NegativeNegative

3.3. NeitherNeither

18. An electron located between two 18. An electron located between two oppositely charged parallel plates is oppositely charged parallel plates is accelerating toward the + plate. As accelerating toward the + plate. As

the Voltage between the plated the Voltage between the plated decreases, the acceleration of the decreases, the acceleration of the

electronelectron

1.1. DecreasesDecreases

2.2. IncreasesIncreases

3.3. Remains the sameRemains the same

19. A device used to separate 19. A device used to separate isotopes of the same element is called isotopes of the same element is called

a a

1.1. LaserLaser

2.2. Mass spectrometerMass spectrometer

3.3. Split-ring commutatorSplit-ring commutator

4.4. TransformerTransformer

20. Who determined the charge of 20. Who determined the charge of an electron?an electron?

MilikinMilikin

In his oil-drop experimentIn his oil-drop experiment

21. During one complete rotation of the 21. During one complete rotation of the loop, the direction of the current in the loop loop, the direction of the current in the loop on side A can be symbolized byon side A can be symbolized by

1.1. XxxxxxxXxxxxxx2.2. OooooooOoooooo3.3. Both xxx and ooooBoth xxx and oooo4.4. Neither xxx or oooooNeither xxx or ooooo

N SA

21. Looking at the momentary placement of 21. Looking at the momentary placement of the loop, the the loop, the inducedinduced potential difference in potential difference in the left side of the loop will bethe left side of the loop will be

1.1. XxxxxxxXxxxxxx2.2. OooooooOoooooo3.3. Both xxx and ooooBoth xxx and oooo4.4. Neither xxx or oooooNeither xxx or ooooo

N S

The primary coil of a transformer The primary coil of a transformer with an efficiency of 100% has 200. with an efficiency of 100% has 200. turns and its secondary coil has 50. turns and its secondary coil has 50.

turns. The primary coil is connected turns. The primary coil is connected to a 120-V AC Power supply and to a 120-V AC Power supply and

develops 600-W of Power.develops 600-W of Power.

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

23. What is the current in the 23. What is the current in the primary coil?primary coil?

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

We will do quick review tomorrowWe will do quick review tomorrowand then you will take your examand then you will take your exam