Lesson Plan: The Electric Potential Difference Provided by Cells Science
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to calculate the potential difference provided by a cell based on the amount of work it does to separate charge.
Objectives
Students will be able to
- recognize that a potential difference is created by a separation of positive and negative charges,
- recognize that by allowing charges to flow along conductors, a charge separation can be reduced to zero,
- recall that the potential difference provided by a battery to a circuit is called its electromotive force,
- use the formula .
Prerequisites
Students should already be familiar with
- the idea that there are positive and negative charges,
- the idea that like electric charges repel each other and opposite electric charges attract each other,
- the idea that objects and materials are made of atoms,
- the idea that atoms consist of positively charged nuclei and negatively charged electrons,
- the circuit symbols for a cell and a bulb,
- the idea that an electric current is a flow of electrons.
Exclusions
Students will not cover
- the chemistry of electrochemical cells,
- any other types of voltage sources,
- capacitors,
- resistance,
- internal resistance of cells,
- resistors,
- dielectrics.