NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Electromagnetic Induction
NEET · Physics · Electromagnetic Induction
A uniform but time varying magnetic field (B(t)) exists in a...
A uniform but time varying magnetic field (\mathrm{B}(\mathrm{t})) exists in a cylindrical region of radius (\alpha) and is directed into the plane of the paper, as shown in fig. The magnetic field decreases at a constant rate inside the region. If is the distance from the axis of the cylindrical region then match column I to column II.
| Column-I | Column-II | ||
| I. | Induced electric field | a. | 0 to 1 |
| at point A | |||
| II. | Induced electric field | b. | Zero |
| at point B | |||
| III. | Force on an electron | c. | 0 to 4 |
| placed at point A | |||
| IV. | Force on an electron | d. | 0 to 2 |
| placed at point B |
Options
- AI -a, II - d, III - d, IV - a
- BI -d , II -a , III -c , IV -a
- CI , II , III , IV
- DI - a, II - a, III - c, IV - c
Correct answer
D. I - a, II - a, III - c, IV - c
Step-by-step solution
Matching with Option (4) (I-a, II-a, II-c, IV-c):
- I. Induced electric field at point A : The option states ' a ' (0 to 1). This is consistent with a field that starts at 0 and increases linearly inside.
- II. Induced electric field at point B: The option states ' a ' (0 to 1). This implies a range for the field outside.
- III. Force on an electron at point A : The option states ' c ' (0 to 4). This reflects the force being proportional to the electric field inside.
- IV. Force on an electron at point B: The option states ' c ' (0 to 4). This reflects the force outside.