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Calibrating instruments…
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Charges at rest — the inverse-square force, fields and potentials, on the bench.
The CBSE Class 12 electrostatics chapter made hands-on: charge two spheres and slide them apart to watch Coulomb's inverse-square force fall on a force sensor, map the field and equipotentials of a charge, and twist a dipole in a uniform field to feel its torque. Every force and field is computed from Coulomb's law — the one rule the whole chapter is built on.
Beyond the open showcase, subscribed schools get the growing library of Electrostatics experiments — searchable, tagged by concept and difficulty, and expanding continuously.