Read Charged Spheres: Separate Centre, Surface and Infinity
This short read prepares one exact NSEP pattern: potential inside a uniformly charged sphere. Identify the physical condition before calculating.
Electricity questions depend on identifying charge, a conducting path and the condition that controls current or magnetic effect.
Start with the physical model
Read the configuration once, state the conserved quantity or governing law, and mark any changing geometry, sign convention or limiting condition.
Build the relation
Hence work done in bringing q from infinity is qVc, not zero, so Statement I is false.
Therefore I false, II true: D.
Check before selecting
Check units, sign and one limiting case. A valid result must still fit the original geometry and stated constraint.
OlympIQ exam lens
- ✓Name the governing law before using a formula.
- ✓Keep the stated geometry and direction information explicit.
- ✓Use one unit or limiting-case check.
Zero electric field at the centre does not mean zero potential or zero work from infinity.
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