Electronic Fundamentals Flashcards
6 cards from real CBT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Electronic Fundamentals flashcards as text
What is Ohm’s Law used to calculate in electrical circuits?
Answer: Voltage, current, and resistance
Ohm’s Law describes the relationship between voltage (V), current (I), and resistance (R), defined as V = IR.
What happens to total resistance when resistors are added in parallel?
Answer: Total resistance decreases
Adding resistors in parallel decreases the total resistance because the current has multiple paths to flow.
Which unit is used to measure electrical capacitance?
Answer: Farads
Capacitance is measured in farads (F), representing the ability of a component to store electrical charge.
What is the purpose of a diode in a circuit?
Answer: Allows current to flow in one direction
A diode allows current to flow in one direction only, acting as a one-way valve in electronic circuits.
What is the role of inductance in an AC circuit?
Answer: Opposes changes in current
Inductance resists changes in current and causes a phase shift between voltage and current in AC circuits.
What kind of waveform is typically produced by an AC generator?
Answer: Sinusoidal wave
AC generators produce a sinusoidal waveform, which represents alternating current varying smoothly over time.