Coast Guard Exams
Question 139Electricity/Electronics - QMED70% to pass

If a digital multimeter is set up as shown in figure "A" of the illustration to test a capacitor, what would the display read if the capacitor is shorted? Illustration EL-0213

Diagram for question 139
AI Explanation
The correct answer is B) the ohmic value would read very low and remain at that value. When a capacitor is shorted, it behaves like a direct connection between the two terminals, resulting in a very low resistance or ohmic value. This is because a shorted capacitor essentially creates a direct path for the current to flow, bypassing the capacitive element. Therefore, the digital multimeter would display a very low ohmic reading that would remain constant, as the shorted capacitor continues to provide a low-resistance path. The other answer choices are incorrect because: A) a shorted capacitor would not read a very high resistance; C) the ohmic value would not gradually rise to an extremely high value; and D) the ohmic value would not initially read very high and then gradually drop to an extremely low value.