All Flashcards
What is inductance (L)?
The proportionality constant between magnetic flux and current, measured in Henries (H).
What is an inductor?
A coil of wire that resists changes in current and stores energy in a magnetic field.
Define magnetic flux ().
A measure of the amount of magnetic field lines passing through a given area.
What is the time constant () in an LR circuit?
The time it takes for the current in an LR circuit to reach approximately 63.2% of its maximum value.
Define angular frequency () in an LC circuit.
The rate at which energy oscillates between the capacitor and inductor in an LC circuit.
What is induced EMF?
The electromotive force generated in a circuit due to a changing magnetic field.
What is an inductor?
A coil of wire that resists changes in current and stores energy in a magnetic field.
Define inductance (L).
The proportionality constant between magnetic flux and current: .
What is the unit of inductance?
Henry (H)
What is induced EMF?
The voltage generated in an inductor due to a changing current, opposing the change: .
Define the time constant () in an LR circuit.
The time it takes for the current in an LR circuit to reach approximately 63.2% of its maximum value: .
Define angular frequency () in an LC circuit.
The rate at which energy oscillates between the capacitor and inductor in an LC circuit: .
What are the differences between an inductor and a capacitor?
Inductor: Stores energy in a magnetic field, resists changes in current. Capacitor: Stores energy in an electric field, resists changes in voltage.
What are the differences between LR and LC circuits?
LR Circuit: Contains inductor and resistor, current changes exponentially. LC Circuit: Contains inductor and capacitor, energy oscillates between them sinusoidally.
What are the differences between the energy stored in an inductor and a capacitor?
Inductor: (magnetic field). Capacitor: (electric field).
Compare the initial behavior of an inductor and a capacitor in a DC circuit.
Inductor: Acts like an open circuit initially. Capacitor: Acts like a short circuit initially.
Compare the final behavior of an inductor and a capacitor in a DC circuit.
Inductor: Acts like a wire (short circuit) after a long time. Capacitor: Acts like an open circuit after a long time.