Mix
Which scientist supported direct current in the "war of the currents?"
Thomas Edison
What is the unit of voltage?
Volts [V]
A path for electrical flow.
Circuit
If my computer is running at a maximum 200V and has a resistance of 40 Ω, what is its current?
5 A
A circuit has a current of 2 A and a power rating of 8 W. What is the voltage?
4 V
Which scientist supported alternating current in the "war of the currents?"
Nikola Tesla
What is the unit of current?
Ampere or Amp [A]
The rate of flow of electric charge.
Current
My toaster has a voltage of 609 V and a current of 43 A, what is its resistance?
My toaster has a resistance of 14.16 Ω.
If a circuit has a voltage of 24 V and a current of 6 A, what is the electrical power?
144 W
What is the difference between alternating and direct current?
Alternating current changes direction periodically, while direct current never changes direction.
What is the unit of resistance?
Ohm [Ω]
charge can be transferred from object to object, but cannot be created or destroyed
law of conservation of charge
My house has a resistance of 93 Ω and an amperage of 48 A, what is its voltage?
Its voltage is 4464 V.
What is the current in a circuit with a voltage of 15 V and a power rating of 11 W?
0.73 A
What is the difference between a series and parallel circuit?
A series circuit contains only one path for electric current to flow through, while a parallel circuit contains two or more paths for current to flow through.
What is the unit for electrical power?
W, watt
Tendency of a material to resist the flow of electrons
Resistance
A bell has a current of 1000 A and a resistance of 3 Ω what is its voltage?
3000 V
If a circuit has a current of 4 A and a power rating of 32 W, what is the voltage?
8 V
What species of animal did Thomas Edison electrocute to death in the town square to "prove" that Tesla's alternating current was dangerous?
Elephant (Topsy the elephant)
material in which electrons are not able to move easily
insulator
Your dryer runs on 240 V. If it draws 28 amps, how much resistance does it have?
8.57 Ω
What is the power rating in a circuit with a voltage of 30 V and a current of 5 A?
150 W