Ohm's Law

Ohm's law is explored qualitatively and mathematically and terms such as voltage, current, resistance, and circuit are defined.

Unit 5 Segment E: Current Electricity Current electricity is defined as we explore the relationship between voltage, current, and resistance. Ohm's law is introduced as well as the equation relating electric force and electric field.

Premiere Date: August 2, 2018 | Runtime: 00:06:03

Learning Objectives

-Define Ohm’s Law in words and mathematically.

-Define voltage, current, and resistance.

-Discuss under what circumstances Ohm’s Law is accurate and when it is not.

-Explore how Ohm found the relationship between the voltage and current in a wire of a given resistance.

Toolkit

Note-Taking Guide and Questions to Consider
Practice Problems
Ohm’s Law Lab

Vocabulary

circuit - a closed loop through which electrical charges can continuously flow.

current (I) - the flow of electric charge per unit time; SI unit is the ampere (A).

electric potential (V) - also known as voltage, the energy capacity of a unit of charge; the SI unit is the volt (V).

Ohm’s Law - law formulated by Georg Ohm that relates current, voltage, and resistance within a circuit; voltage is equal to current times resistance.

resistance (R) - the opposition of a material to the flow of electric current; the SI unit is the ohm (Ω).

Georgia Standards of Excellence

SP5
Obtain, evaluate, and communicate information about electrical and magnetic force interactions.
d
Plan and carry out an investigation of the relationship between voltage, current, and power for direct current circuits. (Clarification statement: Application of Ohm’s Law to different circuit configurations, not limited to parallel and series, and calculations of equivalent resistance are expected.)

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