Physics- Electric Charges and Fields

zero ✘ along the diagonal AC ✘ along the diagonal BD ✘ perpendicular to side AB ✔

Closed surface ✘ Spherical surface ✘ Gaussian surface ✘ Plane surface ✔

Gauss's law is true for any closed surface. ✘ The term q on the right side side of Gauss's law includes the sum of all charges enclosed by the surface. ✘ Gauss's law is not much useful in calculating electrostatic field when the system has some symmetry. ✘ Gauss's law is based on the inverse square dependence on distance contained in the coulomb's law ✔

the electric field is necessarily zero. ✘ the electric field is due to the dipole moment of the charge distribution only. ✘ the dominant electric field is inversely pro-portional to r3, for large r (distance from ori-gin). ✘ the work done to move a charged particle along a closed path, away from the region will not be zero. ✔

N C-1 m-2 ✘ N C m-²

  ✘ N C-2 m² ✘ N C-1 m² ✔

newton ✘ coulomb ✘ farad ✘ debye ✔

field strength ✘ direction ✘ nature of charge ✘ all of these ✔

✘ ✘ ✘ ✔

4 ✘ 02-Apr ✘ -4 ✘ -0.25 ✔

electric flux ✘ electric field ✘ electric potential ✘ electric current ✔