MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Alternating Current and Voltage knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The potential energy possessed per unit of charge at any given location is referred to as the electric ___. |
| A. | resistance |
| B. | current |
| C. | power |
| D. | potential |
| Answer» E. | |
| 2. |
There are four resistors in a given series circuit and each resistor has 12 V dropped across it. The source voltage |
| A. | 48 v |
| B. | 24 v |
| C. | 3 v |
| D. | 12 v |
| Answer» B. 24 v | |
| 3. |
A series circuit consists of three resistors. Two resistors are 1.2 k ohm each. The total resistance is 12 k ohm. The value of the third resistor |
| A. | is 960 ohm |
| B. | is 9,600 ohm |
| C. | cannot be determined |
| D. | is 1.2 k ohm |
| Answer» C. cannot be determined | |
| 4. |
When 50 V is applied to four series resistors, 100 µA flows. If R 1 = 12 k , R 2 = 47 k , and R 3 = 57 k , what is the value of R 4 ? |
| A. | 38.4 k |
| B. | 3.84 k |
| C. | 384 k |
| D. | 3.84 M |
| Answer» D. 3.84 M | |
| 5. |
Given a series circuit containing resistors of different values, which statement is not true ? |
| A. | The current through each resistor is the same. |
| B. | The sum of the voltage drops across each resistive element will be equal to source voltage. |
| C. | The total resistance is the sum of the value of the resistors. |
| D. | The voltage drop across each resistor is the same. |
| Answer» E. | |
| 6. |
While putting three 1.5 V batteries into a flashlight, you put one in backwards. The flashlight will be ______________. |
| A. | brighter than normal |
| B. | dimmer than normal |
| C. | off |
| D. | the same |
| Answer» C. off | |
| 7. |
Kirchhoff’s voltage law states that: |
| A. | the sum of the voltage drops in a series circuit is equal to the total applied voltage |
| B. | the algebraic sum of the resistances is equal to the sum of the voltages |
| C. | the algebraic sum of the individual currents around a closed loop is zero |
| D. | the voltages developed across each element in a series circuit are identical |
| Answer» B. the algebraic sum of the resistances is equal to the sum of the voltages | |
| 8. |
With a total resistance of 3300 ohms and a 45 V source, if R 3 is 1200 ohms, what will be its voltage drop? |
| A. | 16.36 V |
| B. | 32.72 V |
| C. | 10.90 V |
| D. | 15.00 V |
| Answer» B. 32.72 V | |
| 9. |
Two 6 V batteries are connected series aiding across two 1.2 k resistors in series. Current through each resistor is |
| A. | 5 mA |
| B. | 10 mA |
| C. | 0 A |
| D. | 2.5 mA |
| Answer» B. 10 mA | |
| 10. |
The total resistance of a circuit is 680 . The percentage of the total voltage appearing across a 47 resistor that makes up part of the total series resistance is |
| A. | 68% |
| B. | 47% |
| C. | 69% |
| D. | 6.91% |
| Answer» E. | |
| 11. |
Two 1.5 V cells are connected series opposing across two 100 resistors in series. Total current flow is |
| A. | 15 mA |
| B. | 5 mA |
| C. | 2 mA |
| D. | 0 A |
| Answer» E. | |
| 12. |
A series circuit consists of three resistors. Two resistors are 1.2 k each. The total resistance is 12 k . The value of the third resistor |
| A. | is 9,600 |
| B. | is 960 |
| C. | is 1.2 k |
| D. | cannot be determined |
| Answer» B. is 960 | |
| 13. |
To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed |
| A. | between the second and third resistors |
| B. | at the negative terminal of the source |
| C. | between the third and fourth resistors |
| D. | at any point in the circuit |
| Answer» E. | |
| 14. |
If a 6 V and a 9 V source are connected series aiding, the total voltage is |
| A. | 6 V |
| B. | 9 V |
| C. | 3 V |
| D. | 15 V |
| Answer» E. | |
| 15. |
There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage |
| A. | is 6 V |
| B. | depends on the current flow |
| C. | depends on the resistor values |
| D. | is 30 V |
| Answer» E. | |
| 16. |
Three 680 resistors are connected in series with a 470 V source. Current in the circuit is |
| A. | 69 mA |
| B. | 230 mA |
| C. | 23 mA |
| D. | 690 mA |
| Answer» C. 23 mA | |
| 17. |
A series circuit consists of a 4.7 k , a 12 k , and a 2.2 k resistor. The resistor that has the most voltage drop is |
| A. | the 12 k |
| B. | the 2.2 k |
| C. | the 4.7 k |
| D. | impossible to determine from the given information |
| Answer» B. the 2.2 k | |
| 18. |
The following resistors (one each) are connected in a series circuit: 470 , 680 , 1 k , and 1.2 k . The voltage source is 20 V. Current through the 680 resistor is approximately |
| A. | 60 mA |
| B. | 30 mA |
| C. | 6 mA |
| D. | 300 mA |
| Answer» D. 300 mA | |
| 19. |
A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R 3 . The voltage across R 3 is |
| A. | 0 V |
| B. | 1.2 V |
| C. | 6 V |
| D. | 0.6 V |
| Answer» D. 0.6 V | |