Física 4.12 Resumen del tema de electrostática. Fórmulas y ejercicios básicos de campo eléctrico.

We present the key formulas for the electric field and explain how they apply to different types of problems we might encounter: sum of fields, canceling fields, work done by the field, work that must be done, uniform fields, etc. We also explain how to derive other common formulas from these, formulas that are not worth memorizing. -Very easy question: In what units can electric field strength be measured? And electric potential? -Easy question: If two charges with opposite signs are on the x-axis, how can we determine in which region of space the total electric field produced by these charges will be zero? -Normal question: If the potential difference (final minus initial) between two points is 7 V, calculate the work done by the electric field when a charge of -2 mC moves from the initial point to the final point.