MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A solenoid with 400 turns is 10.0 cm long and has a radius of 1.0 cm. The current in the solenoid is 5A. The magnetic field at the centre of the solenoid is: |
| A. | 2.5 × 10-2 T |
| B. | 2.5 × 10-3 T |
| C. | 5.0 × 10-2 T |
| D. | 5.0 × 10-3 T |
| Answer» B. 2.5 × 10-3 T | |
| 2. |
Ampere circuital law can be expressed as: |
| A. | ∇ × B = μJ |
| B. | ∇ × B = 0 |
| C. | grade B = 0 |
| D. | Div B = 0 |
| Answer» B. ∇ × B = 0 | |
| 3. |
Arrange paramagnetic, diamagnetic, and ferromagnetic material on the order of susceptibility? |
| A. | Paramagnetic material > Diamagnetic material > Ferromagnetic material |
| B. | Diamagnetic material > Paramagnetic material > Ferromagnetic material |
| C. | Paramagnetic material < Diamagnetic material > Ferromagnetic material |
| D. | Ferromagnetic material > Paramagnetic material > Diamagnetic material |
| Answer» E. | |
| 4. |
_______ was the first to demonstrate experimentally that a current carrying conductor behaves like a magnet. |
| A. | Andre-Marie Ampere |
| B. | Hans Christian Oersted |
| C. | Henry Cavendish |
| D. | Simon Ohm |
| Answer» C. Henry Cavendish | |
| 5. |
A magnetic field of 3.6T is applied to a paramagnetic gas. The atoms of the gas have magnetic dipole moment of 4.5 × 10-23 J/T. At what temperature, will the mean translation kinetic energy kinetic energy of an atom of the gas be equal to the energy required to change the alignment of atom’s magnetic dipole form antiparallel to parallel (to the magnetic field) (Boltzmann constant = 1.38 × 10-23 J/K) |
| A. | 0.82 K |
| B. | 1.74 K |
| C. | 300 K |
| D. | 15.7 K |
| Answer» E. | |
| 6. |
A uniform magnetic field of 1.4 T passes through a wire loop of area 0.5 m2. If the direction of the field makes a 30° angle with the normal to the plane of the loop. the magnetic flux through the loop is: |
| A. | 2.8 Wb |
| B. | 6.1 Wb |
| C. | 0.61 Wb |
| D. | 0.30 Wb |
| Answer» D. 0.30 Wb | |
| 7. |
A magnetic field of 1.2 T is applied to a paramagnetic gas. The atoms of the gas have magnetic dipole moment of 1.5 × 10-23 J/T. At what temperature, will the mean translation kinetic energy of an atom of the gas be equal to the energy required to change the alignment of atom’s magnetic dipole from antiparallel to parallel (to the magnetic field)? (Boltzmann constant = 1.38 × 10-23 J/K) |
| A. | 0.82 K |
| B. | 300 K |
| C. | 21.6 K |
| D. | 1.74 K |
| Answer» E. | |