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Coulombs Law Notes The Formula Coulomb’s law describes the force on one charged particle due to another charged particle. F is the force, qa and qb are the charges of particles a and b, r is the distance between the particles and k is a constant, 8.99×109 (Nm2/C2). You should ignore the signs of the charges qa and qb to calculate the magnitude of the force. The direction of the force vector … Read more
Production of AC Voltage The machines which are used to generate electrical voltages are called generators. The generators which generate purely sinusoidal a.c. voltages are called alternators. The basic principle of an alternator is the principle of electromagnetic induction. The sine wave is generated according to Faraday’s law of electromagnetic induction. It says that whenever there is … Read more
Norton’s Theoram Notes Where as Thevenin’s theorem was used to simplify a network to a constantvoltage source and a series resistance. Norton’s theorem can be used to resolve a network into a constant-current source and a parallel resistance. The interchange of voltage sources and current sources by use of Thevenin’s and Norton’s theorems is sometimes useful in … Read more