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1. Electricity and Magnetism Review
3. Electrostatics
4. Coulombs Law
5. Electric Field
6. Electric Potential Energy
7. Electric Potential = Potential Difference = Voltage
8. Electric Field and Potential
9. Question 1: Where along the line going through the points is the electric field zero?
10. Question 2: Where along the line going through the points is the electric potential zero?
11. Question 3: Which way does the electric field point at the center of the square?
12. Question 4: Is the electric potential positive, negative, or zero at the center of the square?
13. Question 5: Which way does the electric field point at the center of the square?
14. Question 6: Is the electric potential positive, negative, or zero at the center of the square?
15. Electric Field and Potential Energy
16. Conductors, Capacitors, and Dielectrics
17. Connecting a Capacitor to a Battery Charges will separate across the capacitor
Charge acquired is directly proportional to the voltage
Constant of Proportionality (C) is the capacitance.
18. Capacitors Store Electric Charge
19. Energy in a Capacitor energy stored = work done to charge the capacitor
Also recall, the work done to move a charge from one potential to another is
W=qV
However, in a capacitor the voltage changes as charges are separated, so average beginning and ending voltage
20. Combining Equations
21. Electric Circuits
22. Electric Current
23. Resistance
24. Resistance
25. Ohms Law
26. Emf Electromotive Force
The source of potential difference
E
27. Series and Parallel Resistors Series:
IT = I = I = I
VT = V + V + V
28. Series Circuits As more resistors are added
Total Resistance increases
R = R + R + R+
Total Voltage stays the same
Battery stays same
Total Current decreases
V = I R
Voltage across each resistor decreases
Current through each resistor decreases
29. Parallel Circuits As more resistors are added
Total Resistance decreases
1/R = 1/R + 1/R + 1/R+
Total Voltage stays the same
Battery stays same
Total Current increases
V = I R
Voltage across each resistor stays the same
Current through each resistor stays the same
30. Series and Parallel Capacitors Series:
QT = Q = Q = Q
VT = V + V + V
1/CT = 1/C + 1/C + 1/C
31. Magnetic Fields
32. Right Hand Rule 1a Magnetic force on a moving charge in a B-Field:
33. Right Hand Rule 1b Magnetic Force on a current-carrying wire in a magnetic field
34. Right Hand Rule 2a Magnetic Field around a current-carrying wire:
35. Right Hand Rule 2b Magnetic Field inside a loop or solenoid
36. The Mass Spectrometer Tool used to measure the abundance of isotopes
37. The Mass Spectrometer
38. The Mass Spectrometer
39. Electromagnetism
40. Magnetic Flux Flow of a Magnetic Field through an area (measured in Webers)
41. Induced EMF A changing magnetic field induces a current in a wire.
42. EMF Induced in a moving conductor: Consider a conducting rod moving in a magnetic field:
43. EMF Induced in a moving conductor: Consider a conducting rod moving in a magnetic field:
44. Practice Problem NO NUMBERS!!!! ?
45. Practice Problem 1 The square loop with sides of length L and resistance R is being pushed at a velocity v through a magnetic field of strength B. Express all answers in terms of the given variables and fundamental constants.
46. Practice Problem 1 Calculate EMF induced in the loop and the magnitude and direction of current in the loop in each of the following situations:
The loop is halfway into the field and still moving to the right
The loop is entirely in the field and still moving to the right
The loop is halfway out of the field and still moving to the right.