MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Determine the self-inductance of a coil, which has a magnetic flux of 50 milliwebers that is produced when a current of 5 A flows through it? |
| A. | 1 10<sup>-2</sup> Wb |
| B. | 1 10<sup>-3</sup> Wb |
| C. | 100 Wb |
| D. | 1 10<sup>3</sup> Wb |
| Answer» B. 1 10<sup>-3</sup> Wb | |
| 2. |
What is the self-inductance of the coil, if the magnetic flux of 10 microwebers is linked with a coil when a current of 5 mA flows through it? |
| A. | 20 mH |
| B. | 5 mH |
| C. | 2 mH |
| D. | 250 mH |
| Answer» D. 250 mH | |
| 3. |
What is the relative permeability of an air-core inductor, if its self-inductance increases from 0.5 mH to 50 mH due to the introduction of an iron core into it? |
| A. | 100 |
| B. | 0.1 |
| C. | 10000 |
| D. | 0.0001 |
| Answer» B. 0.1 | |
| 4. |
Calculate the mutual inductance between two coils if a current 10 A in the primary coil changes the flux by 500 Wb per turn in the secondary coil of 200 turns. |
| A. | 10 H |
| B. | 10<sup>4</sup> H |
| C. | 1000 H |
| D. | 100 H |
| Answer» C. 1000 H | |
| 5. |
Mutual inductance is called the inertia of electricity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Identify the factor on which mutual inductance does not depend. |
| A. | Relative separation |
| B. | The relative orientation of the two coils |
| C. | Reciprocity |
| D. | Permeability of the core material |
| Answer» D. Permeability of the core material | |
| 7. |
Which of the following is the unit of mutual inductance? |
| A. | VsA<sup>-2</sup> |
| B. | V<sup>3</sup>sA<sup>2</sup> |
| C. | V<sup>2</sup>s |
| D. | VsA<sup>-1</sup> |
| Answer» E. | |
| 8. |
Identify the factor on which self-inductance does not depend. |
| A. | Number of turns |
| B. | Area of cross-section |
| C. | Permeability of the core material |
| D. | The permittivity of the core material |
| Answer» E. | |
| 9. |
Write the dimensions of self-inductance. |
| A. | [M<sup>3</sup> L<sup>2</sup> T<sup>-2</sup> A<sup>-2</sup>] |
| B. | [M L<sup>2</sup> T<sup>-2</sup> A<sup>-2</sup>] |
| C. | [M<sup>2</sup> L<sup>2</sup> T<sup>-2</sup> A<sup>-2</sup>] |
| D. | [M L<sup>2</sup> T<sup>2</sup> A<sup>-2</sup>] |
| Answer» C. [M<sup>2</sup> L<sup>2</sup> T<sup>-2</sup> A<sup>-2</sup>] | |
| 10. |
Give the SI unit of self-inductance. |
| A. | Farad |
| B. | Ampere |
| C. | Henry |
| D. | Maxwell |
| Answer» D. Maxwell | |