1. Electricity

4. Producing Electricity

8. Electromagnetic Energy

10. Photoelectric Energy

17. Electric Current I = q/t

20. Potential Difference V = Ed Unit 3 –Electricity

24. Resistance Unit 3 –Electricity

27. Ohm’s Law Unit 3 –Electricity

30. Example In any circuit, the higher the voltage, the higher the current will be. Conversely, the lower the voltage, the lower the current will be. This assumes that the resistance remains constant. However current is also determined by resistance. Resistance is the opposition to current flow. So, assuming that voltage is constant, the higher the resistance is the lower the current will be. Also, the lower the resistance the higher the current will be. Unit 3 –Electricity

31. Equivalent Equations I = V/R R = V/I Unit 3 –Electricity

34. Ohm's Law Unit 3 –Electricity

37. Resistance and Resistivity Unit 3 –Electricity

44. Series & Parallel Circuits Unit 3 –Electricity

60. Parallel Circuits – An Example Unit 3 –Electricity

66. Network Circuits Unit 3 –Electricity

74. Electromagnetic Induction Unit 3 –Electricity

76. Inducing EMF and the North Pole of a Magnet Unit 3 –Electricity

77. Inducing EMF and the South Pole of a Magnet Unit 3 –Electricity

78. Induced EMF and the Area or Orientation of a Coil Unit 3 –Electricity

90. Lenz’s Law Unit 3 –Electricity

95. The Electric Generator Unit 3 –Electricity

97. Producing the AC Current: The First Half Turn Unit 3 –Electricity

98. Producing the AC Current: The Second Half Turn Unit 3 –Electricity

99. The Electric Generator Unit 3 –Electricity

108. Transformers Unit 3 –Electricity