 # DC Fundamentals Review

SKU: EMDCF00CENDuration: 60 Minutes

The fundamental relationships between current voltage and resistance in direct current (DC) circuits are basic to understanding all types of electricity and electrical circuitry. This course is intended as a general review of basic electrical concepts and circuit analysis for participants already possessing some background in electrical theory.

### Course Details

#### Specs

Training Time: 60 minutes

Compatibility: Desktop Only

Based on: Industry Standards and Best Practices

Languages: English

### Learning Objectives

• Name the electrical quantities represented by l, E, and R.
• State Ohm's Law in words and as a formula.
• Calculate the current, voltage, or resistance of a simple circuit when any two of the quantities are known.
• Calculate the total resistance of a series circuit when its individual series resistances are known.
• Calculate the resistance of a single series component when the total circuit resistance and the remaining series resistances are known.
• State Kirchhoff's Voltage Law.
• Calculate the voltage drops across each component in a series circuit.
• Calculate the current through a series circuit when a single resistance and its voltage drop are known.
• State Kirchhoff's Current Law.
• Calculate the branch currents in a parallel circuit when the source voltage and the individual branch resistances are known.
• Calculate the total current through a parallel circuit when the individual branch currents are known.
• Calculate the total resistance of a parallel circuit when the individual branch resistances are known.
• Calculate the total resistance of a series-parallel circuit.
• Calculate the voltage drops in a series-parallel circuit.
• Calculate the branch currents in a series-parallel circuit.
• Calculate the voltage drop across a series component by the proportional voltage drop method.
• Calculate the branch current through a parallel branch by the proportional branch current method.
• Calculate the total resistance of any two parallel branches by the product over-sum method.
• Calculate the resistance of a circuit with any number of equal parallel resistances by using the R/n formula.
• Calculate the branch currents of a circuit with any number of equal parallel resistances by using the It/n formula.
• Given the source voltage and resistance of a circuit, calculate the additional series resistance required to limit current through the circuit to a specified value.
• Given the schematic of an incandescent lighting circuit, calculate its total current and select the appropriate protective fuses.
• Describe the effects of opens and shorts in series and parallel circuits.