Q1 Force acting on a stationary point charge q in an electric field E is
- `q^{2}E`
- `\frac{q}{E}`
- qE
- `\frac{E}{q}`
qE
Q2 Electric field intensity due to a source charge at a distance r varies as
- r
- `r^{2}`
- `r^{-2}`
- `r^{-1}`
Q3 Dimensional formula of electric field is
- `MLT^{-3}A^{-1}`
- `MLT^{-2}A^{-1}`
- `ML^{2}T^{-2}A^{-1}`
- `MLT^{2}A^{-1}`
`MLT^{-3}A^{-1}`
Q4 The electric field E at a point just outside a perfect conductor is
- parallel to surface
- zero
- perpendicular to surface
- any direction
perpendicular to surface
Q5 The electric field inside a spherical shell of uniform surface charge density
- Zero
- constant less than zero
- directly proportional to distance from center
- None of these
Zero
Q6 which of the following is deflected by a electric field
- neutrons
- alpha particles
- gamma rays
- all of these
alpha particle
Q7 An electron and a proton are in a uniform electric field. The ratio of their accelerations will be
- Zero
- unity
- `\frac{m_p}{m_e}`
- `\frac{m_e}{m_p}`
Q8 an electron enters in the electric field with its velocity in direction of electric field then
- path of electrons will be circle
- path of electrons will be parabola
- velocity of electrons will decrease
- velocity of electrons will increase
path of electrons will be parabola
Q9 an electron having charge e and mass m moving in a uniform electric field E. Its acceleration will be
- `\frac{e^2}{m}`
- `\frac{E^2}{m}e`
- `\frac{eE}{m}`
- `\frac{mE}{e}`
`\frac{eE}{m}`
Q10 what is the angle between the electric dipole moment and electric field strength due to it on equatorial line?
- Zero
- `90^{0}`
- `180^{0}`
- none of these
`180^{0}`
