1. Ohm’s Law & Circuits
Chapter 7.2 & 7.3

2. Flow of Charge Electricity (charge) Flow of electrons
Caused by differences in charge
Charge will flow from negative to positive end

3. Electric Current Rate the electrons are moving Measured in amperes (A)
Conductors have electrons that are free to move
Measured in amperes (A)

4. Voltage
Provides “electric pressure” (force per area) to move electrons between two terminals in a circuit
Causes current
Measured in volts (V)

5. Electric Resistance
Resists to the flow of charge
Measured in Ohms (Ω)

6. Ohm’s Law Current= voltage resistance
The greater the resistance, the less the current
The greater the voltage, the greater the current