Ham Radio Technician Test Basic Electronics & Circuitry 2 — Questions and Answers
Question 1: What happens to total resistance when resistors are connected in parallel?
- It increases beyond the largest resistor
- It equals the sum of all resistors
- It decreases below the smallest resistor (Correct answer)
- It remains equal to the average
Correct answer: It decreases below the smallest resistor
In a parallel circuit, total resistance is always less than the smallest individual resistor.
Question 2: Which component stores energy in an electric field?
- Inductor
- Resistor
- Capacitor (Correct answer)
- Diode
Correct answer: Capacitor
A capacitor stores energy in the electric field between its plates.
Question 3: What is the unit of electrical capacitance?
- Henry
- Ohm
- Farad (Correct answer)
- Siemens
Correct answer: Farad
The farad (F) is the SI unit of capacitance, named after Michael Faraday.
Question 4: In a DC circuit, if voltage doubles while resistance stays the same, what happens to current?
- Current halves
- Current stays the same
- Current doubles (Correct answer)
- Current quadruples
Correct answer: Current doubles
By Ohm's Law (I = V/R), doubling voltage with constant resistance doubles the current.
Question 5: What does a diode allow in a circuit?
- Current to flow in both directions equally
- Current to flow in one direction only (Correct answer)
- Voltage to be amplified
- Resistance to be reduced
Correct answer: Current to flow in one direction only
A diode is a one-way valve for current, allowing flow in only one direction (forward bias).
Question 6: What is the relationship between frequency and period of a wave?
- Frequency equals period squared
- Frequency equals 1 divided by period (Correct answer)
- Frequency equals period times 2π
- Frequency equals period plus wavelength
Correct answer: Frequency equals 1 divided by period
Frequency (f) and period (T) are reciprocals: f = 1/T.
Question 7: Which type of circuit has only one path for current to flow?
- Parallel circuit
- Bridge circuit
- Series circuit (Correct answer)
- Resonant circuit
Correct answer: Series circuit
In a series circuit, all components share a single current path, so the same current flows through each.
Ham Radio Technician Test Basic Electronics & Circuitry 2
What happens to total resistance when resistors are connected in parallel?