JEE MainPhysicsElectrostaticsNumerical+4 / −1
A body having specific charge 8 C/g is resting on a frictionless plane at a distance 10 cm from the wall (as shown in the figure). It starts moving towards the wall when a uniform electric field of 100 V/m is applied horizontally towards the wall. If the collision of the body with the wall is perfectly elastic, then the time period of the motion will be s. 
Numerical answer
More from Electrostatics
- An electric dipole is placed on x-axis in proximity to a line charge of linear charge density 3.0 10 6 C/m. Line charge is placed on z-axis and positive and negative charge of dipole is at a distance of 10 mm and 12 mm from…2021 · MCQ
- The total charge enclosed in an incremental volume of 2 10 9 m3 located at the origin is nC, if electric flux density of its field is found as D = e x sin y e x cos y …2021 · Numerical
- A cube of side 'a' has point charges +Q located at each of its vertices except at the origin where the charge is Q. The electric field at the centre of cube is : Includes diagram2021 · MCQ
- Two electrons each are fixed at a distance '2d'. A third charge proton placed at the midpoint is displaced slightly by a distance x (x << d) perpendicular to the line joining the two fixed charges. Proton will execute simple harmonic…2021 · MCQ
- A point charge of +12 C is at a distance 6 cm vertically above the centre of a square of side 12 cm as shown in figure. The magnitude of the electric flux through the square will be 103 Nm2/C. Includes diagram2021 · Numerical
- The electric field in a region is given by . The ratio of flux of reported field through the rectangular surface of area 0.2 m2…2021 · Numerical
- 512 identical drops of mercury are charged to a potential of 2V each. The drops are joined to form a single drop. The potential of this drop is V.2021 · Numerical
- A charge 'q' is placed at one corner of a cube as shown in figure. The flux of electrostatic field through the shaded area is : Includes diagram2021 · MCQ