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NEIEP 600 Final Exam Practice Test – 100 Questions with Rationales
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46
July 2026
2025/2026
A+
In capacitors, what is the purpose of the dielectric?
A. To increase capacitance
B. To prevent arcing within the capacitor
C. To reduce resistance
D. To store electrons
Correct Answer: B. To prevent arcing within the capacitor
Explanation: The dielectric is an insulating material between capacitor plates that prevents arcing (current jumping between plates) while allowing electrostatic charge storage.
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Question 2
Which of the following is true about capacitors in AC circuit...
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