Series Circuit
What is true about Current in a series circuit
IT = I1 = I2
What is true about voltage in a parallel circuit
Vt = V1 = V2
What is the resistivity of Nichrome?
150. X 10-8
What is Coulomb's Law
The total charge you start with is the same as what you end with.
What is the total resistance of a circuit with a current across resistor 1 of 2A and a total voltage of 50v
25 ohms
Determine the total resistance of a parallel circuit with the following resistors: 4 ohms, 5 ohms, 10 ohms, 40 ohms, and 2 ohms
1/Req = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5
= 1/4 + 1/5 + 1/10 + 1/40 + 1/2
(Find common denominator)
10/40 + 8/40 + 4/40 + 1/40 + 20/40 = 43/40
(Flip) Req = 40/43
What voltage of across a 13 ohm resistor with 169 volts of electricity running through it?
V = I*R = 13*169 = 2197 volts
What is current?
Q/t or Charge over time or the rate of charges through a circuit over time.
What is the total voltage of a series circuit with a 5 ohm resistor with 2A of current running through and 2 other resistors of 10 ohms each?
= 5 + 2 + 2 = 9 ohms
It = I1 = 2A
V = I*R = 2*9 = 18 volts
What is the total current in a parallel circuit with a 4 ohm resistor and a 2 ohm resistor and a voltage across the second resistor of 15 volts?
1/RT = 1/2 + 1/4 = 2/4 + 1/4 = 3/4 --> 4/3
IT = VT / RT = 15 /4/3 = 1.25 A
Find the current of a 3k ohm resistor with 60 volts of electricity.
1/50 A or 60/3000 A or .2 A
Two negatively charged objects will do this
Repel.
What is the voltage across a resistor of 5 ohms if the total voltage is 60 volts and the total resistance is 15 ohms?
I = VT/RT = 60/15 = 4 A
V = I*R = 5 * 4 = 20v
Determine the resistance of a gold wire that is 5m long and has an area of 15 m2.
R = (2.44 X 10-8)(5)/ (15) = 8.13 X 10-9
Determine the electrostatic force of two elementary charges that are 5mm apart.
Fe = (8.99X109)(1.6 X 10-19)(1.6 X 10-19)/(5 x 10-3)2
How do you find total voltage?
Vt = V1 + V2
How do you find Total current in parallel circuit
It = I1 + I2
Determine the resistance of an aluminum wire that is 4 m long and has a diameter of 2mm.
R = (2.82 X 10-8)(4)/pi(r)2
diameter = 2*radius
2/2 = 1mm = 1 X 10-3m = radius
R = (2.82 X 10-8)(4)/pi(1 X 10-3)2
R = 3.59 X 10-2 ohms
a -4C and a +1.5 C charge are combined. What is the resulting charge of each after separation?
Total charge = -4 + 1.5 = -2.5C
-2.5/2 = -1.25 C