Lesson plan: Electric field

Lesson:

Date:

Teacher’s name:

Grade:

Number present

Number absent

The topic of the lessons

Electric Field

Learning Objectives

• Explain physical meaning of “electric field” and determine its dynamics characteristics;

• Show electric field by using electric field lines.

Lesson Objectives:

By the end of the lesson, the learner will be able to:

• ALL learners will be able to explain physical meaning of “electric field”

• MOST learners will be able Explain physical meaning of “electric field” and determine its dynamics characteristics;

• SOME learners will be able to show electric field by using electric field lines

Language Objectives:

Subject Learning:

Learners can characterize electric field

Language Learning:

• Learners can interpret sketch graphs to explain force between charges (speaking and listening skills OR reading and writing skills)

Subject-Specific Vocabulary and Terminology:

neutral atom, electron, positive ion , electrical charges, positive charge, negative charge

(бейтарап атом, электрон, оң ион, электр заряды, оң заряд, теріс заряд,)

Useful Sets of Phrases for Dialogue and Writing:

• the electric field vector e at a point in space is…

• the electric field lines for a point charge

• positive point charge

ICT skills

Projector or Smart board for power point presentation

Previous Learning:

Electric charges

Coloumb’s law

Lesson’s plan

Planned

timings

1-2 min

3-8 min

8-12 min

13-35 min

36-40 min

Planned Activities

I. Organization moment:

Greeting.

II. Checking home task.

The nucleus of an iron atom has a radius of about 4x10^-15 m and contains 26 protons. What repulsive electrostatic force acts between two protons in such a nucleus if a distance of one radius separates them?

Solution

III. Introduction new topic:

Electric Field – Definition

the electric field vector E at a point in space is defined as the electric force F_e acting on a positive test charge q placed at that point divided by the test charge:

F = K|q||q|/r² = magnitude of the electric force

k = Coulomb's constant = 8.9875 x 10⁹Nm²/c² 

Note that since F is a vector and q is a scalar,

E must be a vector.

the units of Electric Field in SI units of newtons per coulomb (N/C)

• The electric field lines for a point charge.

• (a) For a positive point charge, the lines are directed radially outward.

• (b) For a negative point charge, the lines are directed radially inward.

• Or the electric field lines extend away from positive charge (where they originate) and towards negative charge (where they terminate)

IV. Home task: learn the definitions

Reflection:

Name one thing you would like to know more

Give one thing which you find difficult

Name one thing you liked most

Resources

presentation

sides:

1-2

3- 6