Circuits Flashcards
1
Q
What is Ohm’s Law?
A
V= IR
2
Q
Calculate Resistors in a series.
A
R1 + R2 + R3 = Rtot.
3
Q
Calculate Resistors in parallel.
A
R1(r2)/ R1 + R2
4
Q
What effects resistance?
A
Increase the voltage or current won’t will not affect resistance. You have to change the material itself.
R = pL/ a
5
Q
What is the formula for conductivity?
A
1 / p.
p being the resistivity of the material.
6
Q
What is the formula for Power?
A
P = IV
ONLY FOR RESISTORS:
I^2R = V^2 / R
7
Q
What is the potential energy of the capacitor?
A
Pe = .5 qv = .5 cv^2
8
Q
What is the formula for current?
A
Current is the charge over time.
9
Q
What is the right hand rule for current carrying wires?
A
Grab the wire with the thumb pointing in the direction of the current. Your fingers will represent the direction of the magnetic field.
