Electronics information · Difficulty 3
Try this ASVAB-style question.
Choose your answer before opening the explanation. This original practice item is for preparation and does not reproduce an official test question.
Which situation is the best example of resistance?
- A rectifier blocks one polarity of an alternating signal.
- A resistor limits current through an LED.
- Opening one lamp disconnects every lamp in the single loop.
- An overload causes a thin metal element to break the circuit.
Reveal answer and explanation
A resistor limits current through an LED.
resistance is opposition to electric current. A resistor limits current through an LED.