Circuits and Circuit Elements PDF

Circuits and Circuit Elements Eric Ryan C. Talactac All electric circuits are wired in series, parallel, or a combination.  Objectives Interpret and construct circuit diagrams. Identify circuits as open or closed. Deduce the potential difference across the circuit load, given the pote...

Circuits and Circuit Elements Eric Ryan C. Talactac All electric circuits are wired in series, parallel, or a combination.  Objectives Interpret and construct circuit diagrams. Identify circuits as open or closed. Deduce the potential difference across the circuit load, given the potential difference across the battery’s terminals. Calculate the equivalent resistance for a circuit of resistors in series, and find the current in and potential difference across each resistor in the circuit. Calculate the equivalent resistance for a circuit of resistors in parallel, and find the current in and potential difference across each resistor in the circuit. Schematic Diagram A diagram that depicts the construction of an electrical apparatus  Electric Circuit A set of electrical components connected such that they provide one or more complete paths for the movement of charges  Open Close Circuit Circuit is a closed-loop incomplete path for path, there is electrons to no charge flow follow and therefore no current  Short circuits can be Resistors in Series Resistors in series carry the same current The equivalent resistance in a series circuit is the sum of the circuit’s resistances  Because Req represents the sum of the individual resistances that have been connected in series, the equivalent resistance of a series combination of resistors is always greater than any individual resistance. A 9.0 V battery is connected to four light bulbs, as shown at right. Find the equivalent resistance for the circuit and the current in the circuit. A 12.0 V storage battery is connected to three resistors, 6.75 Ω, 15.3 Ω, and 21.6 Ω , respectively. The resistors are joined in series. a. Calculate the equivalent resistance. b. What is the current in the circuit? Series circuits require all elements to conduct Resistors in Parallel  Parallel Circuit describes two or more components of a circuit that provide separate conducting paths for current because the components are connected across common points or junctions Resistors in parallel have the same potential differences across them  The sum of currents in parallel resistors equals the total current Because the potential difference across each bulb in a parallel arrangement equals the terminal voltage (ΔV = ΔV1 = ΔV2), you can divide each side of the equation by ΔV to get the following equation. A 9.0 V battery is connected to four resistors, as shown. Find the equivalent resistance for the circuit and the total current in the circuit. A 4.0 Ω resistor, an 8.0 Ω resistor, and a 12.0 Ω resistor are connected in parallel across a 24.0 V battery. a. What is the equivalent resistance of the circuit? b. What is the current in each resistor? Parallel circuits do not require all elements to conduct Resistors Combined Both in Parallel And in Series Determine the equivalent resistance of the complex circuit shown below. Determine the equivalent resistance of the complex circuit shown below. Ra = 25.0 Ω Rb = 3.0 Ω Rc = 40.0 Ω