Circuit Analysis Flashcards
6 cards from real BEE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Circuit Analysis flashcards as text
Kirchhoff's Current Law (KCL) states that:
Answer: Current entering a node equals current leaving
KCL: The algebraic sum of currents at any node is zero (current in = current out).
Two 10Ω resistors connected in parallel have a combined resistance of:
Answer: 5Ω
Parallel: 1/R_total = 1/10 + 1/10 = 2/10, so R_total = 5Ω.
The time constant (τ) of an RC circuit is:
Answer: R × C
τ = RC (resistance × capacitance) in seconds.
In a series RLC circuit at resonance:
Answer: Impedance is minimum (equals R only)
At resonance, inductive and capacitive reactances cancel, leaving only R.
Thevenin's theorem allows a complex circuit to be represented as:
Answer: A voltage source in series with resistance
Thevenin equivalent: open-circuit voltage source (Vth) in series with Thevenin resistance (Rth).
The unit of capacitance is:
Answer: Farad
Capacitance is measured in Farads (F). Common values are in µF, nF, or pF.