All Flashcards
What is the definition of Electric Current?
Flow of electric charge (measured in Amperes, A).
What is the definition of Voltage?
Electric potential difference (measured in Volts, V).
What is the definition of Resistance?
Opposition to current flow (measured in Ohms, Ω).
What is the definition of Electric Power?
Rate of energy transfer (measured in Watts, W).
What is the definition of Electric Flux?
Measure of electric field through a surface.
Define Kirchhoff's Current Law (KCL).
Current in = Current out at a node.
Define Kirchhoff's Voltage Law (KVL).
Sum of voltage drops in a loop = 0.
What happens when the separation distance between capacitor plates decreases?
The capacitance increases, and the energy stored in the capacitor increases if the voltage is kept constant.
What happens when a dielectric material is inserted between the plates of a capacitor?
The capacitance increases.
What happens when the resistance in a circuit increases, assuming voltage remains constant?
The current decreases, according to Ohm's Law (V = IR).
What are the differences between Direct Current (DC) and Alternating Current (AC)?
DC: Current flows in one direction. AC: Current reverses direction periodically.
What are the differences between resistors in series and parallel?
Series: Same current, total resistance is the sum. Parallel: Same voltage, reciprocal of total resistance is the sum of reciprocals.