Choose the correct options for the following questions.
Unit of $\rm{CV^{2}}$ is equivalent to that of?
Difficulty: Easy
A:
Energy
B:
Work
C:
Power
D:
None
Two identical conducting spheres A and B carry equal charge Q. They are separated by a distance much larger than their diameters. A third identical conducting sphere C carries charge 2Q. Sphere C is first touched to A, then to B, and finally removed. As a result, the electrostatic force between A and B, which was originally F, becomes
Difficulty: Easy
A:
$\rm{\frac{F}{2}}$
B:
$\rm{\frac{15F}{8}}$
C:
$\rm{\frac{5F}{7}}$
D:
$\rm{\frac{2F}{5}}$
If the electric field is $\rm{E = \frac{x}{y}}$ then $\rm{y}$ is?
Difficulty: Easy
A:
Positive test charge
B:
Negative charge
C:
Force
D:
None of these
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