Series Circuit Calculations 200

This class covers the formulas and rules for calculating the values of voltage, current, resistance, and power in direct-current series circuits.

Class Details

Class Name:
Series Circuit Calculations 200
Description:
This class covers the formulas and rules for calculating the values of voltage, current, resistance, and power in direct-current series circuits.
Version:
1.0
Difficulty:
Intermediate
Number of Lessons:
18
Additional Language:
Spanish
Related 2.0 Class:
Series Circuit Calculations 301

Class Outline

  • Objectives
  • Predicting Electrical Capacity
  • Series Circuits
  • Current
  • Voltage
  • Resistance
  • Ohm’s Law
  • Power
  • Power Calculations
  • Voltage Drops
  • Resistance Values
  • Rules for DC Series Circuits
  • Solving Series Circuits
  • Sample Circuit
  • Sample Problem
  • Measuring Devices
  • Application of Circuit Calculations
  • Summary

Objectives

  • Explain how to predict electrical quantities and capacity in DC series circuits.
  • Describe the characteristics of a DC series circuit.
  • Describe the characteristics of current in a DC series circuit.
  • Describe the characteristics of voltage in a DC series circuit.
  • Describe the characteristics of resistance in a DC series circuit.
  • Describe the relationship of the variables in Ohm’s Law.
  • Describe the characteristics of power in a DC series circuit.
  • Use the power wheel to select an appropriate formula.
  • Describe the relationship between voltage drops and total voltage.
  • Describe the relationship between resistor values and total resistance.
  • State the rules for DC series circuits.
  • Solve for the unknown value in a DC series circuit.
  • Solve for the missing values in a DC series circuit using a schematic drawing.
  • Solve for the missing values in a DC series circuit using a table.
  • Identify the devices used to measure electrical values in a DC series circuit.
  • Describe common applications for circuit calculations.

Certifications

SME
  • CMfgT
MSSC
  • MSSC Maintenance Awareness

Glossary

Vocabulary Term Definition
ammeter A device used to measure current flow.
amp The shortened term for ampere.
ampere A unit of electrical measurement that describes both an amount of electricity and the time it takes for electricity to travel a certain distance. One amp equals one coulomb per second.
capacity The amount of electricity that can safely flow through a wire without the wire overheating.
control A part or component in a circuit that controls the flow of electricity.
coulomb The smallest quantity measurement of electrical current. A coulomb may be thought of as a "drop" of electricity.
current The flow of electricity. Current is measured in amps.
de-energized When power retained by sophisticated electronic devices is removed with a special shorting instrument.
direct current Current that travels in one direction. Direct current does not reverse the direction of flow.
directly proportional A relationship where a number increases or decreases together with another number at the same ratio. Directly proportional is the opposite of inversely proportional.
electromotive force The force that pushes electrons through a conductor.
in parallel When current passes through separate components in a circuit simultaneously because there is more than one path for current to flow.
in series When current passes through all components in a circuit one after another because there is only one path for current flow.
inversely proportional A relationship where a number either increases as another decreases or decreases as another increases. Inversely proportional is the opposite of directly proportional.
joule The amount of power used when 1 amp flows through 1 ohm for 1 second.
Kirchhoff’s Voltage Law The universal truth stating that the sum of the voltages around any closed loop must equal zero.
load The part or component in a circuit that converts electricity into light, heat, or mechanical motion. Examples of loads are a light bulb, appliance, or machine.
multimeter A device that combines the functions of an ammeter, voltmeter, and ohmmeter.
ohm The unit of measurement for electrical resistance.
Ohm’s Law The universal truth stating that it takes one volt to push one amp through one ohm.
ohmmeter A device used to measure resistance.
path A conductor that directs electricity in a circuit. The path is often copper wire.
power The rate at which a device converts electrical energy into another form, such as heat or light. Power is measured in watts.
resistance The opposition to current flow. Resistance is measured in ohms.
resistor A device that restricts current flow and produces work, such as heat.
series circuit A route for the flow of electricity that has only one path.
source The device that provides electrical power to a circuit. The source is the origin of electricity, such as a battery or power plant.
volt A unit of voltage or electrical pressure.
voltage A measure of electrical pressure or potential known as electromotive force. Voltage is measured in volts.
voltage drop The amount of voltage needed to push a given amount of current through a given amount of resistance.
voltmeter A device used to measure voltage.
watt A unit of measurement for the wattage or power being used in a circuit. Watts require a change in energy to exist.
wattage The power being used in a circuit. It is measured in watts.
work The result of electricity flowing through some type of resistance. Work appears in the form of heat, light, or motion.