A charge $q$ moves in a region where electric field and magnetic field both exist, then force on it is
A charge $q$ moves in a region where electric field and magnetic field both exist, then force on it is
- [AIPMT 2002]
- A
$q \overrightarrow{ E }+ q (\overrightarrow{ V } \times \overrightarrow{ B })$
- B
$q (\overrightarrow{ V } \times \overrightarrow{ B })$
- C
$q \overrightarrow{ E }+ q (\overrightarrow{ B } \times \overrightarrow{ V })$
- D
$q \overrightarrow{ B }+ q (\overrightarrow{ E } \times \overrightarrow{ V })$
Similar Questions
Electron moves at right angles to a magnetic field of $1.5 \times 10^{-2}\,tesla$ with speed of $6 \times 10^7\,m/s$. If the specific charge of the electron is $1.7 \times 10^{11}\,C/kg$. The radius of circular path will be......$cm$
Electron moves at right angles to a magnetic field of $1.5 \times 10^{-2}\,tesla$ with speed of $6 \times 10^7\,m/s$. If the specific charge of the electron is $1.7 \times 10^{11}\,C/kg$. The radius of circular path will be......$cm$
- [AIIMS 2010]
An electron is travelling horizontally towards east. A magnetic field in vertically downward direction exerts a force on the electron along
An electron is travelling horizontally towards east. A magnetic field in vertically downward direction exerts a force on the electron along
Two ions having same mass have charges in the ratio $1: 2$. They are projected normally in a uniform magnetic field with their speeds in the ratio $2: 3$. The ratio of the radii of their circular trajectories is -
Two ions having same mass have charges in the ratio $1: 2$. They are projected normally in a uniform magnetic field with their speeds in the ratio $2: 3$. The ratio of the radii of their circular trajectories is -
- [JEE MAIN 2021]
A particle of charge $16\times10^{-16}\, C$ moving with velocity $10\, ms^{-1}$ along $x-$ axis enters a region where magnetic field of induction $\vec B$ is along the $y-$ axis and an electric field of magnitude $10^4\, Vm^{-1}$ is along the negative $z-$ axis. If the charged particle continues moving along $x-$ axis, the magnitude of $\vec B$ is
A particle of charge $16\times10^{-16}\, C$ moving with velocity $10\, ms^{-1}$ along $x-$ axis enters a region where magnetic field of induction $\vec B$ is along the $y-$ axis and an electric field of magnitude $10^4\, Vm^{-1}$ is along the negative $z-$ axis. If the charged particle continues moving along $x-$ axis, the magnitude of $\vec B$ is
- [JEE MAIN 2013]
If an electron is going in the direction of magnetic field $\overrightarrow B $ with the velocity of $\overrightarrow {v\,} $ then the force on electron is
If an electron is going in the direction of magnetic field $\overrightarrow B $ with the velocity of $\overrightarrow {v\,} $ then the force on electron is