MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a current-voltage relationship graph of a linear resistor, the slope of the graph will indicate ___________ |
| A. | conductance |
| B. | resistance |
| C. | resistivity |
| D. | a constant |
| Answer» B. resistance | |
| 2. |
Resistivity of a wire depends on ___________ |
| A. | length of wire |
| B. | cross section area |
| C. | material |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 3. |
Conductance is expressed in terms of ___________ |
| A. | mho |
| B. | mho/m |
| C. | ohm/m |
| D. | m/ohm |
| Answer» B. mho/m | |
| 4. |
Ohm s law is not applicable to ___________ |
| A. | dc circuits |
| B. | high currents |
| C. | small resistors |
| D. | semi-conductors |
| Answer» E. | |
| 5. |
A copper wire of length l and diameter d has potential difference V applied at its two ends. The drift velocity is V. If the diameter of wire is made d/4, then drift velocity becomes ___________ |
| A. | V/16 |
| B. | 16V |
| C. | V |
| D. | V/4 |
| Answer» C. V | |
| 6. |
In which of the following cases is Ohm s law not applicable? |
| A. | Electrolytes |
| B. | Arc lamps |
| C. | Insulators |
| D. | Vacuum ratio values |
| Answer» D. Vacuum ratio values | |
| 7. |
Consider a circuit with two unequal resistances in parallel, then ___________ |
| A. | large current flows in large resistor |
| B. | current is same in both |
| C. | potential difference across each is same |
| D. | smaller resistance has smaller conductance |
| Answer» D. smaller resistance has smaller conductance | |
| 8. |
An electric current of 10 A is the same as ___________ |
| A. | 10 J/C |
| B. | 10 V/C |
| C. | 10C/sec |
| D. | 10 W/sec |
| Answer» D. 10 W/sec | |
| 9. |
Resistance of a wire is y . The wire is stretched to triple its length, then the resistance becomes ___________ |
| A. | y/3 |
| B. | 3y |
| C. | 6y |
| D. | y/6 |
| Answer» C. 6y | |