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
Suppose you have three resistors, each of value $30\Omega.$ List all the different resistances you can obtain using them.
→Name the part of the electromagnetic spectrum of wavelength $10^{–2 }m$ and mention its one application.
→What is called optical instrument?
At which point on its path a projectile has the smallest speed?
A point charge $+Q$ is placed at point $O$ as shown in the figure. Is the potential difference $V_A – V_B$ positive, negative or zero?
→NaCl molecule is bound due to the electric force between the sodium and the chlorine ions when one electron. of sodium is transferred to chlorine. Taking the separation between the ions to be 2.75 × 10cm, find the force of attraction between them· State the assumptions (if any) that you have made.
Can electric potential at a point be zero, while the electric field is not zero?
The plates of a parallel-plate capacitor are given equal positive charges. What will be the potential difference between the plates? What will be the charges on the facing surfaces and on the outer surfaces?
The value of electric flux through a closed surface is zero. What does this mean?
What will be the magnitude of induced current in circular loop KLMN of radius $r$ if constant current of $1 A$ is passed in straight wire $P Q$ ?
→