Definitions
Anything with mass that takes up space
Matter
Subatomic particle; Positive
Proton
The units of current
Amperes
What is Ohm's Law formula?
V=IR
What is the unit for resistance?
Ohms (omega)
Charge imbalance that results in the build up of excess electric charge on an object.
Static Electricity
These charges repel.
Like charges
The push (force) that causes charge to move
Voltage Difference
1.A fan is drawing 2 amps and has 4.5 ohms of resistance, what is the voltage of its power source.
V= 9V
_______ temperature has ______ resistance
Higher, more
Lower, less
Closed path an electric current flows through
Circuit
Charge cannot be created or destroyed; only transferred
Law of Conservation of Charge
Charge flows from _________ voltage areas to ______ voltage areas.
High to low
What is the current produced with a 9 V battery through a resistance of 100 ohms?
I=0.09 amps
_______ diameter of wire has ______ resistance
Smaller; more
Larger; less
Sudden flow of electric charge between two charges objects
Static Discharge
Allows charge to act at a distance; can move the charges around an object.
Electric Field
Describe the position of the switch for a circuit with current flowing.
Closed switch
An electric toothbrush operates on 120 V and has a current of 0.0125 amps. What is its resistance?
R=9,600 ohms
_______ length of wire has _______ resistance
Larger; more
Smaller; less
Device that converts chemical energy to electrical energy.
Battery
What are the three ways charge is transferred?
Conduction, Friction, Induction
What are the four factors of resistance?
1. Material
2. Size of wire
3. Length of wire
4. Temperature of wire
What resistance would produce a 350 amps with a potential difference of 2,500V?
7.14 ohms
The _____ the voltage, the ______ the current.
Higher, higher
Lower, lower