List of top Physics Questions on Electric charges and fields asked in COMEDK UGET

Which of the following is incorrect about charges ?

Two electric dipoles of dipole moments \(3.9 \times 10^{-30}\,\text{C m}\) and \(5.2 \times 10^{-30}\,\text{C m}\) are placed in two different uniform electric fields of strengths \(16 \times 10^{4}\,\text{N C}^{-1}\) and \(4 \times 10^{4}\,\text{N C}^{-1}\) respectively. What is the ratio of maximum torque experienced by the electric dipoles?

A particle of mass \(3\,\text{g}\) and charge \(60\,\mu C\) is released from rest in a uniform electric field of intensity \(10^5\,\text{N C}^{-1}\). If the value of kinetic energy attained by the particle after moving through a distance of \(2\,\text{cm}\) is \(m \times 10^{-2}\,\text{J}\), then the value of \(m\) is:

The square of resultant of two equal electric field vectors is three times their product. Angle between them is

The electric field versus distance graph is shown as given. Select the correct statement from the following.
E – electric field, R – radius, r – distance from the centre