Question
An electron is not deflected while passing through a uniform magnetic field. What is the direction of magnetic field?
✓
Answer
Direction of magnetic field is either in the direction of motion of electron or opposite to it. Hence, $\theta=0^{\circ}$ or $180^{\circ}$ and therefore, $F = eVB \sin \theta=0$. So it will not be deflected.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An inductor and a resistor are joined in series with any ac source. What is the phase difference in the potential difference across their ends?
Should a thermometer bulb have large heat capacity or small heat capacity?
Answer the following question:
An electron travelling west to east enters a chamber having a uniform electrostatic field in north to south direction. Specify the direction in which a uniform magnetic field should be set up to prevent the electron from deflecting from its straight line path.
An electron travelling west to east enters a chamber having a uniform electrostatic field in north to south direction. Specify the direction in which a uniform magnetic field should be set up to prevent the electron from deflecting from its straight line path.
Define one ampere in international unit system.
Write name of electromagnetic radiation with highest penetration power.
What is nuclear fusion?
Answer the following questions:
Would the maximum possible magnetisation of a paramagnetic sample be of the same order of magnitude as the magnetisation of a ferromagnet?
Would the maximum possible magnetisation of a paramagnetic sample be of the same order of magnitude as the magnetisation of a ferromagnet?
Why Bohr's orbit is called stable orbit?
The magnetic moment vectors $\mu_\text{s}$ and $\mu_\text{l}$ associated with the intrinsic spin angular momentum S and orbital angular momentum l, respectively, of an electron are predicted by quantum theory (and verified experimentally to a high accuracy) to be given by:
$\mu_\text{s}=-(\text{e}/\text{m})\text{S}.$
$\mu_\text{l}=-(\text{e}/2\text{m})\text{l}.$
Which of these relations is in accordance with the result expected classically? Outline the derivation of the classical result.
→→$\mu_\text{s}=-(\text{e}/\text{m})\text{S}.$
$\mu_\text{l}=-(\text{e}/2\text{m})\text{l}.$
Which of these relations is in accordance with the result expected classically? Outline the derivation of the classical result.
