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Electrostatics question

2011 · Shift 2 · Q41
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Electrostatics question

2011 · Shift 2 · Q41

JEE AdvancedPhysicsElectrostaticsMultiple correct+4 / −1
Which of the following statement(s) is/are correct?
  1. A
    If the electric field due to a point charge varies as r−2.5{r^{ - 2.5}}r−2.5 instead of r−2,{r^{ - 2}},r−2, then the Gauss law will still be valid.
  2. B
    The Gauss law can be used to calculate the field distribution around an electric dipole.
  3. C
    If the electric field between two point charges is zero somewhere, then the sign of the two charges is the same.
  4. D
    The work done by the external force in moving a unit positive charge from point AAA at potential VA{V_A}VA​ to point BBB at potential VB{V_B}VB​ is (VB−VA).\left( {{V_B} - {V_A}} \right).(VB​−VA​).
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