NEIEP 600 FINAL EXAM QUESTIONS WITH
CORRECT ANSWERS 2025/2026
In capacitors, what is the purpose of the dielectric? - ANS- Prevent arcing within the
capacitor
Which of the following is true about capacitors in AC circuits? - ANS- Current leads
voltage all the time
What describes a capacitor's ability to store an electrical charge? - ANS- Capacitance
Which of the following statements is correct about polarized electrolytic capacitors? -
ANS- Voltage polarity must be correct
What is the time constant for a circuit with 150k ohms and 2 microfarad capacitors? -
ANS- .3 seconds
If frequency is increased in a capacitive circuit what will happen? - ANS- Capacitive
reactance will decrease
What happens in a circuit, when the capacitor voltage equals the source voltage? - ANS-
Current flow stops in the circuit
In a DC circuit, which is correct about capacitors the instant when power is applied? -
ANS- Current is maximum
In the circuit shown in figure 1, what will be the total capacitance? - ANS- 250 u(micro)
farads
If a circuit has a capacitor of 5 microfrauds and a source voltage of 120 volts DC through
a resistance of 200k, how long will it take to fully charge? - ANS- 5 seconds
What happens in a circuit, when the capacitor voltage equals the source voltage? - ANS-
Current flow stops in the circuit
which statement best describes one time constant of a capacitor? - ANS- The time it
takes to charge to 63.2% of applied voltage
In a DC circuit, which is correct about capacitors the instant when power is applied? -
ANS- Current is maximum
CORRECT ANSWERS 2025/2026
In capacitors, what is the purpose of the dielectric? - ANS- Prevent arcing within the
capacitor
Which of the following is true about capacitors in AC circuits? - ANS- Current leads
voltage all the time
What describes a capacitor's ability to store an electrical charge? - ANS- Capacitance
Which of the following statements is correct about polarized electrolytic capacitors? -
ANS- Voltage polarity must be correct
What is the time constant for a circuit with 150k ohms and 2 microfarad capacitors? -
ANS- .3 seconds
If frequency is increased in a capacitive circuit what will happen? - ANS- Capacitive
reactance will decrease
What happens in a circuit, when the capacitor voltage equals the source voltage? - ANS-
Current flow stops in the circuit
In a DC circuit, which is correct about capacitors the instant when power is applied? -
ANS- Current is maximum
In the circuit shown in figure 1, what will be the total capacitance? - ANS- 250 u(micro)
farads
If a circuit has a capacitor of 5 microfrauds and a source voltage of 120 volts DC through
a resistance of 200k, how long will it take to fully charge? - ANS- 5 seconds
What happens in a circuit, when the capacitor voltage equals the source voltage? - ANS-
Current flow stops in the circuit
which statement best describes one time constant of a capacitor? - ANS- The time it
takes to charge to 63.2% of applied voltage
In a DC circuit, which is correct about capacitors the instant when power is applied? -
ANS- Current is maximum
