More Circuits
Resistance
Parallel vs. Series
Power and Efficiency
Math
200
Wires are made from this type of material
What are conductors
200
This property slows down the flow of electrons and transforms electrical energy
What is Resistance
200
In this type of circuit, electrons have more than one path they can flow through
What is a Parallel Circuit
200
The unit to measure electrical power
What are Watts (W; kilowatts is also acceptable)
200
The resistance that would produce a current of 120 A from a 6-V battery?
What is 0.05 Ω
400
Ammeters measure current, and must be connected to a circuit this way
What is connected in Series
400
Resistance is measured using this unit
What are Ohms (Ω)
400
The relationship between currents in a Parallel Circuit
What is IT = I1 + I2 + I3 +...
400
The environmental cost of generating power through burning fossil fuels
What is global warming
400
The current produced with a 9-V battery through a resistance of 100 Ω?
What is 0.09 A
600
This is the pushing force that moves electrons through a circuit
What is Voltage
600
Increasing the length of a wire will do this to its resistance
What is Increase it
600
The relationship between Voltages in a Series Circuit
What is VT = V1 + V2 + V3 + ...
600
This label describes how much power an appliance uses
What is a Power Rating
600
A Plasma screen TV is rated 0.28 kW. It is used for 2.5 hours twice a week to watch football. The cost of energy is 11¢/kWh. This is the cost of watching football for 1 month.
What is 62 cents
800
A complete path from the positive terminal of the battery to the negative terminal of the battery is called this
What is a Closed Circuit
800
The equation showing the relationship between voltage, current, and resistance.
What is Ohm's Law (V = I R)
800
If the current on one lightbulb is 10 A, then the total current (IT) must be this
What is 10 A
800
Electrical energy is calculated by the amount of Power (kW) used over time (hours). The unit to measure electrical energy is called this.
What is a kilowatt-hour (kWh)
800
Given VT = 9 V, RC1 = 10 Ω, and RC2 = 20 Ω, this is the current going through C1 (IC1)
What is 0.45 A
1000
The voltage is necessary to produce a current of 200 A through a resistance of 100 Ω?
What is 20 000 V
1000
Resistance increases when temperature __________
DAILY DOUBLE
What is Increases
1000
In this circuit, if one switch is closed, this many lights will be "on"
What is 1 Light
1000
You can reduce your use of electricity in the house by replacing appliances with ones with this kind of power rating.
What is a Lower Power Rating
1000
Given VT = 9 V, RC1 = 10 Ω, and RC2 = 20 Ω, this is the voltage going through C2 (VC2)
What is 6 V