MCQOPTIONS
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MCQOPTIONS
This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A rectangular coil, of sides 4 cm and 5 cm respectively, has 50 turns in it. It carries a current of 2 A, and is placed in a uniform magnetic field of 0.5 T in such a manner that its plane makes an angle of 60o with the field direction. Calculate the torque on the loop. |
| A. | 5 × 10-4 N m |
| B. | 5 × 10-2 N m |
| C. | 5 × 10-3 N m |
| D. | 5 × 10-5 N m |
| Answer» C. 5 × 10-3 N m | |
| 2. |
A long solenoid has 500 turns per cm and carries a current I. The magnetic field at its center is 7.54 × 10-2 Wb m-2. Another long solenoid has 300 turns per cm and it carries a current \(\frac {I}{3}\). What is the value of magnetic field at the center? |
| A. | 1.50 × 10-3 Wb/m2 |
| B. | 1.50 × 10-5 Wb/m2 |
| C. | 1.05 × 10-3 Wb/m2 |
| D. | 1.50 × 10-2 Wb/m2 |
| Answer» E. | |