MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The magnetic flux in a closed circuit of resistance 20 Ω varies with time t as Φ = 4t3 + 2t2 – 15t + 3. Calculate the magnitude of induced emf at t = 1s. |
| A. | 3 V |
| B. | 4 V |
| C. | 5 V |
| D. | 6 V |
| Answer» C. 5 V | |
| 2. |
Faraday’s laws are result of the conservation of which quantity? |
| A. | Momentum |
| B. | Energy |
| C. | Charge |
| D. | Magnetic field |
| Answer» C. Charge | |
| 3. |
Which among the following is true about Faraday’s law of Induction? |
| A. | An emf is induced in a conductor when it cuts the magnetic flux |
| B. | An emf is induced in a conductor when it moves parallel to the magnetic field |
| C. | An emf is induced in a conductor when it moves perpendicular to the magnetic field |
| D. | An emf is induced in a conductor when it is just entering a magnetic field |
| Answer» B. An emf is induced in a conductor when it moves parallel to the magnetic field | |