Quiz Physics : MCQ on Electric Field Part 1

 

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}`

`r^{-2}`

 

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}`

`\frac{m_p}{m_e}`

 

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}`