donald is a schoolteacher living in atlanta. while conducting online classes, he experienced a momentary decrease in voltage. his computer shut down and when he switched it back on, he realized that he had lost some data. he called his friend chadwick who is a network analyst to check out what the issue was. chadwick found that there was a power flaw caused by an overtaxed electrical system. such voltage decreases can cause computers or applications to fail and potentially corrupt data. what kind of power flaw caused this issue in donald's house?