- 1(current)
Q. No.A metallic rod of mass per unit length of \(0.5\) kgm-1 is lying horizontally on a smooth inclined plane which makes an angle of \(30^\circ\) with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction of \(0.25\) T is acting on it in the vertical direction. What is the current flowing through the rod to keep it stationary?
| 1. | \(7.14\) A | 2. | \(5.98\) A |
| 3. | \(14.76\) A | 4. | \(11.32\) A |
Subtopic: Lorentz Force |
57%
From NCERT
NEET - 2018
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An electron is moving in a circular path under the influence of a transverse magnetic field of T. If the value of e/m is C/kg, the frequency of revolution of the electron is
(1) 1 GHz
(2) 100 MHz
(3) 62.8 MHz
(4) 6.28 MHz
Subtopic: Lorentz Force |
64%
From NCERT
NEET - 2016
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An electron is moving in a circular path under the influence of a transverse magnetic field of \(3.57\times 10^{-2}~\text{T}\). If the value of \(\frac{e}{m}\) is \(1.76\times 10^{11}~\text{C/kg}\), what will be the frequency of revolution of the electron?
| 1. | \(1~\text{GHz}\) | 2. | \(100~\text{MHz}\) |
| 3. | \(62.8~\text{MHz}\) | 4. | \(6.28~\text{MHz}\) |
Subtopic: Lorentz Force |
66%
From NCERT
NEET - 2016
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- 1(current)
Q. No.
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