Deck 4: Capacitors, Introduction to Alternating Current and Voltage

Question 1

How much charge is stored in a 0.022 ?F capacitor that drops 22 V?

A) 48.4 ?C
B) 0.484 ?C
C) 4.84 ?C
D) 0.0484 ?C

Answer 1

0.484 ?C

Question 2

If a 1 ?F, 2.2 ?F and 0.05 ?F capacitor are connected in series, C_T is less than ________.

A) 0.001 ?F
B) 0.05 ?F
C) 1 ?F
D) 2.2 ?F

Answer 2

0.05 ?F

Question 3

If four 0.022 ?F capacitors are connected in parallel, C_T equals ________.

A) 0.049 ?F
B) 0.022 ?F
C) 0.044 ?F
D) 0.088 ?F

Answer 3

0.088 ?F

Question 4

If a 0.047 ?F, 0.047 ?F and 0.47 ?F capacitor are connected in series across a 25 V source, the total capacitance equals ________ and each 0.047 ?F capacitor drops ________.

A) 0.564 ?F, 1.2 V
B) 0.564 ?F, 11.9 V
C) 0.022 ?F, 11.9 V
D) 0.022 ?F, 25 V

Question 5

7.07 V_PP is approximately equal to 2.5 V_RMS.

Question 6

Figure 8-2

-Calculate V_R2 in Figure 8-2.

A) 4.84 V_P
B) 6.84 V_P
C) 6.84 V_PP
D) 13.15 V_P

Question 7

Figure 8-2

-What is the approximate peak input voltage to the circuit in Figure 8-2?

A) 14.1 V_P
B) 20 V_P
C) 28.3 V_P
D) 10 V_P

Question 8

Figure 8-2

-Calculate V_R1 in Figure 8-2.

A) 13.2 V_P
B) 13.7 V_P
C) 6.84 V_P
D) 21.4 V_P

Question 9

Figure 8-2

-Find R_T in Figure 8-2.

A) 4.7 k?
B) 4.77 k?
C) 6.2 k?
D) 1.13 k?

Question 10

Figure 8-2

-Calculate I_T in Figure 8-2.

A) 9.12 mA_PP
B) 4.55 mA_PP
C) 3.22 mA_PP
D) 6.44 mA_PP

Question 11

If a 10 k? resistor carries 5 mA_RMS of current, its voltage drop equals ________.

A) 7.07 V_RMS
B) 70.7 V_RMS
C) 5 V_RMS
D) 50 V_RMS

Question 12

In a two-resistor series circuit V_R1 = 6.5 V_RMS and V_R2 = 3.2 V_RMS. The source voltage is ________.

A) 13.7 V_P
B) 9.19 V_P
C) 9.7 V_P
D) 4.53 V_P

Question 13

A formula for V_RMS is ________.

A) 2.8 × V_P
B) 2 × V_P
C) 0.707 × V_PP
D) 0.707 × V_P

Question 14

A 12 V_P sine wave equals ________.

A) 7.64 V_AVG
B) 24 V_PP
C) 8.48 V_RMS
D) all of these

Question 15

The formula to convert degrees to radians is:

A) radians = × degrees.
B) degrees = × radians.
C) 180° = ? radians.
D) all of these.