WAECAFRICA.COM BEST SCHOOL GUIDE
WAECAFRICA.COM BEST SCHOOL GUIDE
February 14, 2025 at 09:42 AM
*Energy:* 1. *Electric Potential Energy (EPE)*: The energy stored in a charged object or a system of charged objects. - Formula: EPE = k * q1 * q2 / r - where: k = Coulomb's constant, q1 and q2 = charges, r = distance between charges 2. *Electric Potential (V)*: The potential difference between two points in an electric field. - Formula: V = EPE / q - where: EPE = electric potential energy, q = charge 3. *Energy Stored in a Capacitor (E)*: The energy stored in a capacitor. - Formula: E = (1/2) * C * V^2 - where: C = capacitance, V = voltage 4. Electric energy = power × time ( using any of the below formula for power that is P = IV or p = V²/R or P = I²R) *Power:* 1. *Electric Power (P)*: The rate at which energy is transferred or converted in an electric circuit. - Formula: P = V * I - where: V = voltage, I = current 2. *Power Dissipated in a Resistor (P)*: The power dissipated in a resistor due to Joule heating. - Formula: P = I^2 * R - where: I = current, R = resistance 3. *Power Stored in an Inductor (P)*: The power stored in an inductor due to the magnetic field. - Formula: P = (1/2) * L * I^2 - where: L = inductance, I = current *Other Formulas:* 1. *Ohm's Law*: The relationship between voltage, current, and resistance in an electric circuit. - Formula: V = I * R - where: V = voltage, I = current, R = resistance 2. *Capacitor Charging and Discharging*: The equations that describe the charging and discharging of a capacitor. - Formula: Q = C * V (charging), - where: Q = charge, C = capacitance, V = voltage,

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