Chapter 4
Ohm’s Law
Ohm’s Law
Ohm’s Law
Ohm’s Law in Graphical
Form
Ohm’s Law in Graphical
Form
Ohm’s Law in Graphical
Form
Open Circuits
Open Circuits
Voltage Symbols
Voltage Polarities
Voltage Polarities
Current Direction
Current Direction
Current Direction
Current Direction
Power
Power
Power
Power in Electrical
Systems
Power in Electrical
Systems
Power Rating of Resistors
Power Rating of Resistors
Energy
Energy
Energy
Energy
Law of Conservation of
Energy
Law of Conservation of
Energy
Efficiency
Efficiency
Efficiency
Efficiency