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12 Cards in this Set
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EMF/voltage definition? unit? symbol?

def: electrical pressure that comes from a source like a battery
unit: volts (V) symbol: E 

resistance definition? unit? symbol?

def: obstacle in circuit that impedes current
unit: ohms (upsidedown horseshoe) symbol: R 

current definition? unit? symbol?

def: rate of electrons flowing through circuit
unit: amperes (A) symbol: I 

power definition? unit? symbol?

def: total electrical pressure dissipated by the resistor
unit: Watts (W) symbol: P 

formula relating voltage to current and resistance?

E = I / R


formula relating power to current and voltage?

P = E * I


conductance definition? unit? symbol?

def: resistance of parallel resisters; reciprocal of resistance
unit: siemens (S) symbol: G 

formula relating power to current and resistance?

P = I^2 * R


formula relating power to voltage and resistance?

P = E^2 / R


formula relating conductance to resistance?

G = 1 / R


formula relating total resistance of circuit (R) to series resistors (R1, R2, etc.)?

R = R1 + R2 + R3...


formula relating total resistance of circuit (R) to parallel resistors (R1, R2, etc.)?

R = 1 / [1 / R1 +1 / R2 +1 / R3...]
