Key Topic 15: RC Time Constants-2

Question 1

3-15B1: What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors all in parallel?

A. 22 seconds.
B. 44 seconds.
C. 440 seconds.
D. 220 seconds.

Answer 1

D. 220 seconds.

Question 2

3-15B2: What is the time constant of a circuit having two 100-microfarad capacitors and two 470-kilohm resistors all in series?

A. 470 seconds.
B. 47 seconds.
C. 4.7 seconds.
D. 0.47 seconds.

Answer 2

B. 47 seconds.

Question 3

3-15B3: What is the time constant of a circuit having a 100-microfarad capacitor and a 470-kilohm resistor in series?

A. 4700 seconds.
B. 470 seconds.
C. 47 seconds.
D. 0.47 seconds.

Answer 3

C. 47 seconds.

Question 4

3-15B4: What is the time constant of a circuit having a 220-microfarad capacitor and a 1-megohm resistor in parallel?

A. 220 seconds.
B. 22 seconds.
C. 2.2 seconds.
D. 0.22 seconds.

Answer 4

A. 220 seconds.

Question 5

3-15B5: What is the time constant of a circuit having two 100-microfarad capacitors and two 470-kilohm resistors all in parallel?

A. 470 seconds.
B. 47 seconds.
C. 4.7 seconds.
D. 0.47 seconds.

Answer 5

B. 47 seconds.

Question 6

3-15B6: What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors all in series?

A. 220 seconds.
B. 55 seconds.
C. 110 seconds.
D. 440 seconds.

Answer 6

A. 220 seconds.