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30 Cards in this Set
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 Back
what is the formula for resistance?

v
R =  I Resistance voltage  Current 

what is the formula for power?

power = current* voltage
p= IV 

whar is the formula for energy?

Energy = Power * time
E= P*T 

what is the formula for power?

Power = Current * voltage


what is the formula for Current?

charge
 = current time 

what is the formula for power?

Power = Current * voltage


whar is the formula for energy?

Energy = Power * time
E= P*T 

what is the formula for voltage?

Voltage = Current * Resistance
V= IR energy  charge 

What is Electric Current?

The flow of charge; measured in Amperes


What does electric potential mean?

energy per coloumb(J/C) at a location in an electric field; measured in volts and often called voltage


Potential difference?

difference in electric potential (voltage) between two points. Free charge flows when there is a difference, and will continue until both points reach a common potential.


What does ampere's equal?

charge = coulomb
  time second 

What does potential difference, pressure difference, voltage potential and voltage difference have in common?

potential difference, pressure difference, voltage potential and voltage difference:
ALL REFER TO VOLTAGE OR THE FORCE THAT MOVES IN A CIRCUIT 

What are 2 examples of voltage sources?

Battery and Generators all are types of "electric pumps"


What are 3 variables of delveloping Ohm's Law ?

Resistance: measured in Ohm's lessing of flow of charge, restriction
Voltage: measured in volts; forcethat moves electrons in a circuit Current: charge over times *Charge is measured in coulombs Time for this is seconds 

How is current and resistance inversely related?

When resistance goes up
Current goes down Current~ 1  Resistance 

What are the symbol for Current and Voltage, Resistance?

Current = I
Voltage = V Resistance= R 

How is current and voltage directly related?

As voltage goes UP
Current goes DOWN current~voltage 

What is ohm's law?

I = V
 R Current = voltage  resistance 1 ampere = 1volt  1 ohm Voltage= current * resistance 

What is the formula for ampere?

ampere = volt
= ohm 

What is the formula for current?

Current= voltage
 resistance I = v  r 

how is voltANG and resistance DIRECTLY RELATED?

AS VOLTAGE goes up RESISTANCE goes UP


What is an other formula to find voltage?

joule
 coulomb 

What does force consist of?

potential difference
electric pressure pressure difference 

What does 1 Ampere equal?

1 Amperes = 1COULOMB
 seconds Symbol is A 

What does force consist of?

potential difference
electric pressure pressure difference 

1 watt = 1 v * AMPERE =electric power
energy over time = powers watts is a unit of POWER 
watts is a unit of POWER


dc & ac

A Direct Current (DC) referring charge flowing in one direction. A battery produces direct current in a circuit because terminals of the battery always have the same sign of charge.
Alternating Current (AC) electrons in the circuit move first in one direction then in the opposite direction, alternating back and forth rather than in fixed positions. This action is accomplished by alternating the polarity of voltage at the generator or other voltage source. 

watt / kilowatt

Power is a watt, and kilowatt. Energy is kilowatthour. Power: watt, kilowatt; energy: kilowatthour.


1 watt = 1 v * AMPERE =electric power
energy over time = powers watts is a unit of POWER 
watts is a unit of POWER
