Charge Laws
Opposite charges will ______, Like charges will _________
Attract, Repel
Shortening the length of a wire will ___________ the resistance in the circuit
Reduce
In a series circuit, there is a 24 volt battery, and a resistor measured at 4 ohms. What would be the current of this circuit be?
4 A
When electric charge is collected and stored in one place
Static electricity
In a series circut with a 12 volt battery and one lightbulb, what would be the voltage of the battery?
12V
The removal of a charge on an object
Static Discharge
Reducing the Diameter / thickness of a wire will ____________ the resistance of a circuit
Increase
A household appliance is connected to a 120 V power outlet, and draws a current of 5 A. What is consumed by the appliance.
600 W
A continuous flow of electric charge moving from one place to another along a pathway
Current electricity
In a series circuit with 15 A of current running through the beginning, then passes through 3 lightbulbs, how much current will be running through the end?
15A
Bringing a Positively charged object to neutral object will _________
Attract it
Increasing the length of a wire will ____________ the resistance of a wire
Increase
A Landscaper uses an electric lawn mower for 30 minutes, and it uses 3 kWh of energy over this time. If the costs $0.10 per kWh to charge the lawn mower, how much did it cost to mown the lawn.
$0.30
The amount of charge passing a given point per second
Electric Current
In a series circuit with a 10 volt battery with two lightbulbs, what will be the voltage of the lightbulb
5V
If someone rubs a balloon on their head, and all of the electrons from their hair, what will happen to the persons hair, and WHY?
Their hair will stand up, due to all of the hair being positively charged, and repelling from each other
Increasing the diameter / thickness of a wire will ___________ the resistance of a conductor
Decrease
A car engine uses fuel with an energy content that represents 80 000 J of input. If the engine provides 20 000J of useful kinetic energy to move the car, what is the efficiency of the car?
25%
Factor which slows or restricts the flow of electrons
Resistance
In a parallel circuit with a 9 volt battery and 3 lightbulbs, what will be the voltage of each lightbulb?
3V
After drying a load of laundry, you notice that a sock is clinging to a t-shirt. Why is this?
Charging by Friction, one will be positive, the other negative, opposites attract
Lowering the temperature of a condutor will _________ the resistance in a conductor
Reduce
A school uses 7000 W of energy every 180 minutes. Calculate how much energy is being used in kWh
7000 W = 7 kW
180 min = 3 Hours
7 kW x 3 Hours = 21 kWh
The difference in potential energy from one point to another
Electrical Potential Difference (Voltage)
In a parallel circuit with 5 A of current running throughout it a 2 lightbulbs, how much current will be running through each lightbulb?
2.5 A