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. |
What is the study of electric charges in motion called? |
| A. | Charge mobility |
| B. | Electronic mobility |
| C. | Static electricity |
| D. | Current electricity |
| Answer» E. | |
| 2. |
Which of these is a correct definition of electronic current? |
| A. | Current that flows from lower potential to higher potential |
| B. | The current which remains static |
| C. | Current constituted by the flow of ions |
| D. | Current that flows from higher potential to lower potential |
| Answer» B. The current which remains static | |
| 3. |
Which type of a physical quantity is electric current? |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Bipolar quantity |
| D. | Thermodynamic quantity |
| Answer» B. Vector quantity | |
| 4. |
Identify the dimensional formula of electric current. |
| A. | [M L T<sup>-2</sup>] t |
| B. | [M<sup>0</sup> L<sup>0</sup> T<sup>0</sup> A<sup>1</sup>] |
| C. | [M L<sup>3</sup> T<sup>0</sup>] |
| D. | [M L<sup>2</sup> T<sup>-3</sup>] |
| Answer» C. [M L<sup>3</sup> T<sup>0</sup>] | |
| 5. |
In electrolytes and ionic crystals, the current carriers are free electrons. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which type of current is flowing through a circuit? |
| A. | Static current |
| B. | Conventional current |
| C. | Electronic current |
| D. | Potential current |
| Answer» D. Potential current | |
| 7. |
Which of these is a correct definition of conventional current? |
| A. | Current that flows from lower potential to higher potential |
| B. | The current which remains static |
| C. | Current constituted by the flow of ions |
| D. | Current that flows from higher potential to lower potential |
| Answer» E. | |
| 8. |
Give the number of electrons passing through a wire per minute. The current flowing through it is 500mA. |
| A. | 1.875 10<sup>20</sup> |
| B. | 6.875 10<sup>20</sup> |
| C. | 1.875 10<sup>-20</sup> |
| D. | 6.875 10<sup>-20</sup> |
| Answer» B. 6.875 10<sup>20</sup> | |
| 9. |
What is the number of electrons that constitutes a current of one Ampere? |
| A. | 2.25 10<sup>18</sup> |
| B. | 2.25 10<sup>-18</sup> |
| C. | 6.25 10<sup>18</sup> |
| D. | 6.25 10<sup>-18</sup> |
| Answer» D. 6.25 10<sup>-18</sup> | |
| 10. |
What is the SI unit of current? |
| A. | Coulomb (C) |
| B. | Ampere (A) |
| C. | Farad (F) |
| D. | Newton (N) |
| Answer» C. Farad (F) | |