Formulas
State the formula for total resistance of a series DC circuit
RT = R1+R2+R3...
Red - Black - Orange - Gold
20 K Ohms
This variable of Ohm's Law is the same through the entire series circuit
Current
This Italian was a pioneer in the study of electricity and his name is the "force" behind this variable
Alessandro Volta
Circuit #1
State the fundamental formula in the electrical field
V = I R
Yellow - Purple - Black
47 Ohms +/- 20%
The total ______ is the sum of the individual ______ of each component
Resistance
This German gave a complete theory of electricity in his 1827 book "The Galvanic Circuit Investigated Mathematically"
George Ohm
Circuit #2
VS = 18v
State the formula for electrical power
P = I V
Color code for 3.7 Ohms +/- 20%
Orange - Purple - Gold
The total voltage across a series circuit is equal to the sum of this
Individual voltage drops
Though important to the electrical field, this man's law originated in his work with steam engines
James Watt
Circuit #3
Vs = 3v
I2R =
P (Power)
Color code for 66 M Ohms +/- 5%
Blue - Blue - Blue - Gold
The voltage drop across a resistor is _____ to the size of the resistor
Proportional
The man gave his name to the charge equivalent to 6.241 x 1018 electrons
Charles-Augustin de Coulomb
Circuit #4
VR1, VR2, VR3 = 12v
State the formula that utilizes the ratio between a resistor and the total resistance to divide the total voltage
VRx = Vs (Rx/RT)
Color code for 250 Ohms +/- 10%
Red - Green - Brown - Silver
The total power dissipated in a series circuit is equal to this
The sum of the individual power dissipations
This common law used in series DC circuits was named after this man and was actually his second circuit law
Gustav Kirchhoff
Circuit #5
VA = -13.9v