1 >>With a 500 kHz signal source, what would be the value of a capacitor yielding a capacitive reactance of 1 k Ω? ?

• (A) 318 pF
• (B) 2 nF
• (C) 3.18 μ F
• (D) 2 F

2 >>As a capacitor is being charged, the voltage across its terminals will: ?

• (A) increase
• (B) decrease
• (C) remain the same
• (D) oppose the source

3 >>A capacitor stores energy within a dielectric between the conducting plates in the form of: ?

• (A) a magnetic field
• (B) positive voltage
• (C) negative voltage
• (D) an electric field

4 >>If an open capacitor is checked with an ohmmeter, the needle will ?

• (A) stay on zero
• (B) stay on infinity
• (C) move from zero to infinity
• (D) move from infinity to zero

5 >>As a capacitor is being charged, current flowing into the capacitor will: ?

• (A) increase
• (B) decrease
• (C) remain the same
• (D) cannot tell

6 >>A resistor and an output capacitor form a series circuit with a square wave applied. The circuit is: ?

• (A) an integrator
• (B) a differentiator
• (C) a multiplier
• (D) a divider

7 >>A capacitor’s rate of charge is considered: ?

• (A) magnetic
• (B) a current block
• (C) linear
• (D) exponential

8 >>After which time constant can a capacitor be considered to be fully charged? ?

• (A) first
• (B) third
• (C) fifth
• (D) seventh

9 >>You could increase the time constant of an RC circuit by ?

• (A) adding a resistor in parallel with the circuit resistance
• (B) adding a capacitor in parallel with the circuit capacitance
• (C) increasing the amplitude of the input voltage
• (D) exchanging the position of the resistor and capacitor in the circuit

10 >>When a 4.7 μ F capacitor is connected to a 1 kHz source, what is its capacitive reactance? ?

• (A) 4.7 ohms
• (B) 29.5 ohms
• (C) 34 ohms
• (D) 213 ohms

11 >>What is the angle theta value for a 5.6 μ F capacitor and a 50-ohm resistor in series with a 1.1 kHz, 5 Vacsource? ?

• (A) 27.3 degrees
• (B) 62.7 degrees
• (C) -27.3 degree
• (D) -62.7 degrees

12 >>Select the equation below that represents the relationship between charge, capacitance, and voltage for a capacitor. ?

• (A) Q = CV
• (B) C = QV
• (C) V = IR
• (D) Q=VR

13 >>When is a capacitor fully charged? ?

• (A) when the current through the capacitor is the same as when the capacitor is discharged
• (B) when the voltage across the plates is 0.707 of the input voltage
• (C) when the current through the capacitor is directly proportional to the area of the plate
• (D) none of these

14 >>In a 20 Vac series RC circuit, if 20 V is measured across the resistor and 40 V is measured across the capacitor, the applied voltage is: ?

• (A) 45 V
• (B) 50 V
• (C) 55 V
• (D) 60 V

15 >>A parallel resistor’s value that changes with age will cause a corresponding change in ______ . ?

• (A) branch current
• (B) branch voltage
• (C) — branch current and branch voltage
• (D) power supply voltage

16 >>A circuit is parallel between two points if ___ between those two points. ?

• (A) the voltage divides
• (B) more than one current path exists
• (C) all resistors are equal
• (D) there is only one current path

17 >>Circuit analysis should reveal that the largest resistance in a parallel circuit has the _____ ?

• (A) least current
• (B) most current
• (C) least voltage
• (D) most voltage

18 >>An open resistor in parallel will cause the total ___ to increase. ?

• (A) voltage
• (B) current
• (C) resistance
• (D) power

19 >>An ammeter is connected in ______ with the branch resistor to measure branch current, and in ______ with the voltage supply to measure total parallel circuit current. ?

• (A) parallel, series
• (B) series, parallel
• (C) series, series
• (D) parallel, parallel

20 >>As additional resistors are connected to a parallel circuit, the total resistance will ___. ?

• (A) increase
• (B) increase by the value of the resistor being connected
• (C) decrease
• (D) remain unchanged