All Flashcards
What is Electric Charge (q)?
A fundamental property of matter, measured in Coulombs (C). It can be positive or negative.
What is Resistance (R)?
How much a material opposes the flow of electric current, measured in ohms (Ω).
What is Resistivity (ρ)?
An inherent property of a material that determines its resistance, measured in ohm-meters (Ω⋅m). It depends on temperature.
What is Capacitance (C)?
A measure of a material's ability to store electric charge, measured in farads (F).
State Kirchhoff's Voltage Law (KVL).
The sum of the voltages around any closed loop in a circuit is zero.
State Kirchhoff's Current Law (KCL).
The total current flowing into a junction equals the total current flowing out of the junction.
What is the difference between resistance and capacitance?
Resistance opposes current flow; capacitance stores charge.
Compare and contrast Kirchhoff's Voltage Law (KVL) and Kirchhoff's Current Law (KCL).
KVL: Conservation of energy in a loop. KCL: Conservation of charge at a junction.
What factors determine capacitor construction?
Distance between plates, surface area of plates, dielectric material between plates.
What is the formula for Resistance (R)?
R = , where R = Resistance, ρ = Resistivity, L = Length, A = Cross-sectional area.