1
IIT-JEE 2011 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
Which of the following statement(s) is/are correct?
A
If the electric field due to a point charge varies as $${r^{ - 2.5}}$$ instead of $${r^{ - 2}},$$ then the Gauss law will still be valid.
B
The Gauss law can be used to calculate the field distribution around an electric dipole.
C
If the electric field between two point charges is zero somewhere, then the sign of the two charges is the same.
D
The work done by the external force in moving a unit positive charge from point $$A$$ at potential $${V_A}$$ to point $$B$$ at potential $${V_B}$$ is $$\left( {{V_B} - {V_A}} \right).$$
2
IIT-JEE 2010 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
A few electric field lines for a system of two charges $${Q_1}$$ and $${Q_2}$$ fixed at two different points on the $$x$$-axis are shown in the figure. These lines suggest that

A
$$\left| {{Q_1}} \right| > \left| {{Q_2}} \right|$$
B
$$\left| {{Q_1}} \right| < \left| {{Q_2}} \right|$$
C
at a finite distance to the left of $${{Q_1}}$$ the electric field is zero
D
at a finite distance to the right of $${{Q_2}}$$ the electric field is zero
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