MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a series–parallel circuit consisting of R and R in series and connected in parallel with R, if R opens, then R's voltage will: |
| A. | increase |
| B. | decrease |
| C. | remain the same |
| D. | cannot tell |
| Answer» C. remain the same | |
| 2. |
If four 10 k resistors are in series with a single 20 k resistor and one of the parallel resistors shorts, the voltage across the other parallel resistors ________. |
| A. | increases |
| B. | decreases |
| C. | remains the same |
| D. | drops to zero |
| Answer» C. remains the same | |
| 3. |
With 6 V applied, what is the voltage across R of a parallel combination of R (1 k ), R (2 k ), and R (1 k ) in series with R, whose value is 2 k ? |
| A. | 1 V |
| B. | 3 V |
| C. | 5 V |
| D. | 6 V |
| Answer» B. 3 V | |
| 4. |
If R is in series with parallel connected to R and R, what happens to total current if R opens? |
| A. | increases |
| B. | decreases |
| C. | remains the same |
| D. | cannot tell |
| Answer» C. remains the same | |
| 5. |
If a series–parallel circuit has all 30-ohm resistors, what is the total resistance when R is in series with a parallel circuit consisting of R and R? |
| A. | 10 ohms |
| B. | 20 ohms |
| C. | 45 ohms |
| D. | 90 ohms |
| Answer» D. 90 ohms | |
| 6. |
If is in series with a parallel combination of , , and , when the resistance value of increases, the voltage across will |
| A. | increase |
| B. | decrease |
| C. | remain the same |
| D. | Cannot tell |
| Answer» B. decrease | |
| 7. |
With 21 V applied, if R = 5 ohms, R = 35 ohms, and R = 14 ohms, what is the current of R if R is series connected with parallel circuit R and R? |
| A. | 200 mA |
| B. | 800 mA |
| C. | 600 mA |
| D. | 400 mA |
| Answer» E. | |
| 8. |
What is the total resistance of a circuit when R (7 k ) is in series with a parallel combination of R (20 k ), R (36 k ), and R (45 k )? |
| A. | 4 k |
| B. | 17 k |
| C. | 41 k |
| D. | 108 k |
| Answer» C. 41 k | |
| 9. |
If a is balanced, its output voltage is ____. |
| A. | the same as its input voltage |
| B. | very high |
| C. | dependent on the unknown resistor value |
| D. | equal to 0 V |
| Answer» E. | |
| 10. |
A contains _____. |
| A. | a voltage source in series with a resistance |
| B. | a current source in series with a resistance |
| C. | resistors in a series-parallel configuration |
| D. | many voltage sources |
| Answer» B. a current source in series with a resistance | |
| 11. |
The voltage out when a 10 k load is connected is 5.7 volts. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Attaching a 6 k load to a voltage divider will cause a smaller decrease in the output voltage than will attaching a 5 k load. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
A may be used to determine the value of an unknown resistance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
The total resistance in the circuit is 1.6 k. |
| A. | True |
| B. | False |
| Answer» B. False | |