Physics · Electrostatics
The electrostatic potential in a charged spherical region of radius r varies as V = ar3 + b, where a and b are constants. The total charge in the sphere of unit radius is α×πaε0. The value of α is _____. (where ε0 is the permittivity of vacuum)
- 1-8
- 2-9
- 3-6
- 4-12✓
Correct answer
-12
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