Introduction to Electric Circuit Theory

Apply Kirchhoff's current law to circuits by equating the currents entering and leaving each node, where currents split but totals remain equal.

Apply Kirchhoff's voltage law to circuits, summing voltage drops around a loop to zero, using a clockwise reference direction and sign conventions for sources and resistors.

Apply Kirchhoff's laws to a circuit with 5, 10, 6, and 4 ohm resistors; use kcl and kvl to obtain i1=1 A, i3=1 A, i2=0 A, and v5=5 V.

Apply nodal analysis and Kirchhoff's laws to a four-node circuit with a 5 V source, solving branch currents and identifying three independent loops.

Identify independent loops and treat each as a mesh, assign clockwise mesh currents, and apply Kirchhoff's voltage law to obtain voltage drops; this reduces equations and simplifies circuit analysis.

Use mesh analysis on a two-mesh circuit, solve KVL for i1 and i2, yielding 1 A each, with 5 V across the 5-ohm resistor and 1 A through 6-ohm resistor.

Use mesh analysis to analyze meshes, assign currents i1, i2, and i3, and apply kvl to derive equations. Then compute the voltage across the 20 ohm resistor as 15 volts.

Apply the superposition theorem to circuits with multiple voltage sources by analyzing each source independently, replacing inactive sources with shorts, and adding sub-circuit results for currents or voltages.

Apply the superposition theorem to circuits with two voltage sources, using sub-circuits a and b to find voltage across the 5 ohm resistor and current through the 6 ohm resistor.

Apply superposition to a three-source circuit, analyze three sub-circuits by mesh analysis, and sum i2 currents to obtain a 0.75 amp current through the 5-volt source.

Apply Thevenin's theorem to simplify any network to a single voltage source in series with an internal resistance, enabling quick calculation of currents and voltages across components.

Apply Thevenin's theorem to simplify a circuit with six-ohm and ten-ohm resistors, compute open-circuit voltage and Thevenin resistance, and find the current through the six-ohm resistor.

Apply Thevenin's theorem to a circuit, replace voltage sources with short circuits, and compute the equivalent resistance in parallel and series to determine the voltage across the load.

Explore Proteus by dragging and dropping components, wiring a DC voltage source and a resistor, and using a voltmeter and ammeter to simulate and measure a simple circuit.

Simulate a circuit to measure voltage across five-ohm resistor with a voltmeter and current through six-ohm resistor using ammeter, comparing ideal versus real sources as internal resistance drops.

Demonstrates theory and circuit simulation for a voltage source connected to a resistor, showing how internal resistance affects readings and how zero internal resistance yields 5 volts.

Learn to analyze circuits with dc voltage and current sources. Use delta-star and star-delta conversions to simplify resistor networks and study inductors and capacitors as passive energy storage elements.