A prolonged high voltage is a:

The correct answer is C. surge. A power surge is a prolonged increase in voltage above normal levels that lasts longer than a spike-typically milliseconds to seconds. In contrast, a spike (A) is an extremely brief but intense spike in voltage lasting only nanoseconds to microseconds. A blackout (B) is a…

Submitted by javi_es· Apr 18, 2026Security Operations and Administration

Question

A prolonged high voltage is a:

Options

Aspike
Bblackout
Csurge
Dfault

How the community answered

(28 responses)

A
4% (1)
C
89% (25)
D
7% (2)

Explanation

A power surge is a prolonged increase in voltage above normal levels that lasts longer than a spike-typically milliseconds to seconds. In contrast, a spike (A) is an extremely brief but intense spike in voltage lasting only nanoseconds to microseconds. A blackout (B) is a complete loss of power, and a fault (D) is a general term for an electrical abnormality or failure. Understanding the distinction between surges and spikes is important for selecting the appropriate power protection equipment, such as surge protectors or UPS devices.

Topics

#Power anomalies#Electrical disturbances#Surge#Physical security

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