MCQ
An electron is moving along $+x$ direction. To get it moving along an anticlockwise circular path in $x-y$ plane, magnetic field applied along
- A$+y-$ direction
- ✓$+z-$ direction
- C$-y-$ direction
- D$-z-$ direction
✓
Answer
Correct option: B.
$+z-$ direction
b
$\&$ force is in anticlockwise direction
$\&$ force is in anticlockwise direction
According to right hand palon rule
$\mathrm{F}=\mathrm{q}(\vec {\mathrm{V}} \times \vec {\mathrm{B}})$ magnetic field is in $+\mathrm{z}-$ direction.
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
The time period of oscillation of a freely suspended bar magnet with usual notations is given by
Two spheres A and B of radius ‘a’ and ‘b’ respectively are at same electric potential. The ratio of the surface charge densities of A and B is
In a simple $L-R$ circuit with $A.C$. source the potential difference at any instant across inductor and resistance are $V_L$ and $V_R$ respectively and $A.C.$ souree has potential difference $V_{Ac}$ at the same instant. Then
→A rectangular loop has a sliding connector $PQ$ of length $2\ m$ and resistance $10\ \Omega $ and it is moving with a speed $5\ m/s$ as shown. The set-up is placed in a uniform magnetic field $3\ T$ going into the plane of the paper. The three currents $I_1$ , $I_2$ and $I$ are
→The mass number of a nucleus is equal to the number of
Consider a photon of a continuous $X-$ray coming from a Coolidge tube. Its energy comes from:
→An AIR station is broadcasting the waves of wavelength $300$ metres. If the radiating power of the transmitter is $10 kW$, then the number of photons radiated per second is
→The rest energy of an electron is
Modern treatment method $P.E.T.$ is based on $!$
→Three identical bar magnets each of magnetic moment $M$ are placed in the form of an equilateral triangle as shown. The net magnetic moment of the system is
→