MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Find the velocity of an electron when its kinetic energy is equal to one electron volt (in 105m/s).Given charge of an electron e = 1.6 x 10-19 and mass of an electron m = 9.1 x 10-31. |
| A. | 3.9 |
| B. | 4.9 |
| C. | 5.9 |
| D. | 6.9 |
| Answer» D. 6.9 | |
| 2. |
FIND_THE_MEAN_FREE_PATH_OF_AN_ELECTRON_TRAVELLING_AT_A_SPEED_OF_18M/S_IN_2_SECONDS.?$ |
| A. | 9 |
| B. | 36 |
| C. | 0.11 |
| D. | 4.5 |
| Answer» C. 0.11 | |
| 3. |
Find_the_velocity_of_an_electron_when_its_kinetic_energy_is_equal_to_one_electron_volt_(in_105m/s).$ |
| A. | |
| B. | 3.9 |
| C. | 4.9 |
| Answer» D. | |
| 4. |
The superconducting materials will be independent of which of the following? |
| A. | Magnetic field |
| B. | Electric field |
| C. | Magnetization |
| D. | Temperature |
| Answer» C. Magnetization | |
| 5. |
The magnetic susceptibility in a superconductor will be |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Infinity |
| Answer» C. Zero | |
| 6. |
The magnetic field which destroys the superconductivity is called |
| A. | Diamagnetic field |
| B. | Ferromagnetic field |
| C. | Ferrimagnetic field |
| D. | Critical field |
| Answer» E. | |
| 7. |
For a dielectric which of the following properties hold good? |
| A. | They are superconductors at high temperatures |
| B. | They are superconductors at low temperatures |
| C. | They can never become a superconductor |
| D. | They have very less dielectric breakdown voltage |
| Answer» C. They can never become a superconductor | |
| 8. |
Find the dielectric constant for a material with electric susceptibility of 4. |
| A. | 3 |
| B. | 5 |
| C. | 8 |
| D. | 16 |
| Answer» C. 8 | |
| 9. |
A dielectric can be made a conductor by |
| A. | Compression |
| B. | Heating |
| C. | Doping |
| D. | Freezing |
| Answer» C. Doping | |
| 10. |
Identify a good dielectric. |
| A. | Iron |
| B. | Ceramics |
| C. | Plastic |
| D. | Magnesium |
| Answer» C. Plastic | |
| 11. |
A dielectric is always an insulator. But an insulator is not necessarily a dielectric. State True/False. |
| A. | True |
| B. | False |
| Answer» B. False | |