Electrostatic Potential & Capacitance
Class 12 · Electrostatic Potential & Capacitance
Potential due to Point Charge
V = kq/r. Drag a probe and read live potential with full heatmap.
Key Notes
01
Electric potential V at a point is the work done per unit charge in bringing a +ve test charge from infinity to that point.
02
For a point charge: V = kq/r. Scalar quantity, signed.
03
V is positive near +q, negative near −q. SI unit: volt = J/C.
Formulas
Point-charge potential
k = 1/(4πε₀).
PE of two charges
Energy stored in the configuration.
Important Points
V is a scalar — superposition adds algebraically (with sign), not vectorially.
Potential difference V_AB = V_A − V_B is path-independent.
Potential due to Point Charge notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 12 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.