- 1(current)
Q. No.A conducting square frame of side \(a\) and a long straight wire carrying current \(I\) are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity \(v.\) The emf induced in the frame will be proportional to:
| 1. | \( \dfrac{1}{x^2} \) | 2. | \( \dfrac{1}{(2 x-a)^2} \) |
| 3. | \( \dfrac{1}{(2 x+a)^2} \) | 4. | \(\dfrac{1}{(2 x-a)(2 x+a)}\) |
Subtopic: Â Motional emf |
 74%
From NCERT
NEET - 2015
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NEET 2026 - Target Batch - Vital
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A thin semicircular conducting the ring \((PQR)\) of radius \(r\) is falling with its plane vertical in a horizontal magnetic field \(B,\) as shown in the figure. The potential difference developed across the ring when it moves with speed \(v\) is:
| 1. | zero |
| 2. | \(Bv\pi r^{2}/2\) and \(P\) is at a higher potential |
| 3. | \(\pi rvB\) and \(R\) is at a higher potential |
| 4. | \(2BvR\) and \(R\) is at a higher potential |
Subtopic: Â Motional emf |
 75%
From NCERT
AIPMT - 2014
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NEET 2026 - Target Batch - Vital
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A rectangular, a square, a circular, and an elliptical loop, all in the \((x\text-y)\) plane, are moving out of a uniform magnetic field with a constant velocity, \(\vec{v}= v\hat{i}.\) The magnetic field is directed along the negative \(z\text-\)axis direction. The induced emf, during the passage of these loops out of the field region, will not remain constant for:
| 1. | the rectangular, circular, and elliptical loops. |
| 2. | the circular and the elliptical loops. |
| 3. | only the elliptical loop. |
| 4. | any of the four loops. |
Subtopic: Â Motional emf |
 73%
From NCERT
AIPMT - 2009
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
- 1(current)
Q. No.
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