Series Circuits problems
- 1.
In the given circuit, what type of failure will cause the voltage at point B to equal the voltage at point C?
Options- A. R1 shorts
- B. R2 shorts
- C. R3 shorts
- D. R2 opens Discuss
Correct Answer: R2 shorts
- 2. One of the most common applications of a potentiometer is as an adjustable voltage divider, also known as
Options- A. voltage control
- B. current control
- C. volume control
- D. divider control Discuss
Correct Answer: volume control
- 3. If three resistors of 1.5 kilohms, 470 ohms, and 3300 ohms are in series with a 25-volt source, what is the total circuit current?
Options- A. 210 mA
- B. 5.2 mA
- C. 4.7 mA
- D. .007 A Discuss
Correct Answer: 4.7 mA
- 4. If series current doubles, then:
Options- A. resistance is halved
- B. voltage is doubled
- C. voltage is reduced
- D. resistance is doubled Discuss
Correct Answer: resistance is halved
- 5. A series circuit schematic is recognized because all the components are connected:
Options- A. diagonally across the page
- B. in a uniform vertical manner
- C. end to end in a "string"
- D. horizontally across the page Discuss
Correct Answer: end to end in a "string"
- 6. What determines the total resistance in a series circuit?
Options- A. the largest resistor
- B. the sum of the resistors
- C. the largest resistor minus the smaller
- D. the smallest resistor Discuss
Correct Answer: the sum of the resistors
- 7. If 5 V and 16 V power supplies are connected in series-opposing, what is the total voltage?
Options- A. 11 V
- B. 16 V
- C. 21 V
- D. 80 V Discuss
Correct Answer: 11 V
- 8. If two resistors have the same voltage drop in a series circuit, it means:
Options- A. they are connected in parallel
- B. they are of unequal value
- C. the voltage has doubled
- D. they are of equal value Discuss
Correct Answer: they are of equal value
- 9. Power is defined as:
Options- A. the rate at which work is done
- B. work
- C. the conversion of energy
- D. joules Discuss
Correct Answer: the rate at which work is done
- 10. An 8-ohm resistor is in series with a lamp. The circuit current is 1 A. With 20 V applied, what voltage is being allowed for the lamp?
Options- A. 4 V
- B. 8 V
- C. 12 V
- D. 20 V Discuss
Correct Answer: 12 V
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