Unit Lesson Plan – EM Induction
Teacher:
Grade:
<Teacher>
Time Frame:
10, 11
School:
Subject:
NGSS DCI:
8 days
<School>
AP Physics 2

HS-PS2-5. Plan and conduct an investigation to provide evidence
that an electric current can produce a magnetic field and that a
changing magnetic field can produce an electric current.

HS-PS3-5. Develop and use a model of two objects interacting
through electric or magnetic fields to illustrate the forces between
objects and the changes in energy of the objects due to the
interaction.

Essential Knowledge 4.E.2: Changing magnetic flux induces an
electric field that can establish an induced emf in a system.
a. Changing magnetic flux induces an emf in a system, with the
magnitude of the induced emf equal to the rate of change in
magnetic flux.
b. When the area of the surface being considered is constant, the
induced emf is the area multiplied by the rate of change in the
component of the magnetic field perpendicular to the surface.
c.
AP Physics 1 and 2 Standards:
When the magnetic field is constant, the induced emf is the
magnetic field multiplied by the rate of change in area
perpendicular to the magnetic field.
d. The conservation of energy determines the direction of the
induced emf relative to the change in the magnetic flux.

Learning Objective (4.E.2.1):The student is able to construct an
explanation of the function of a simple electromagnetic device in
which an induced emf is produced by a changing magnetic flux
through an area defined by a current loop (i.e., a simple microphone
or generator) or of the effect on behavior of a device in which an
induced emf is produced by a constant magnetic field through a
changing area.
Note that this exact Smart Notebook presentation has not been used in the classroom, although all of the
material has. The pacing below is approximate based on a 40-45 minute class period. Feel free to adjust as
necessary and please provide your feedback!
Essential Questions
(What questions will the student be able to answer as a result of the instruction?)
1. What did Michael Faraday’s experiment demonstrate?
2. Using Faraday’s Law of Induction, explain how a constant magnetic field can still generate an EMF in a
closed loop.
3. What is Lenz’s Law?
Knowledge & Skills
(What skills are needed to achieve the desired results?)
By the end of this unit, students will know:
 That an electric current induces a magnetic field.
 That a changing magnetic field induces an EMF.
 How to determine the direction of the induced
current.
By the end of this unit, students will be able to:
 Determine the flux, induced EMF, and current
using the equations:
𝛷 = 𝐵𝐴
∆𝛷
𝜀 = −𝑁
∆𝑡
𝜀 = 𝐵𝑙𝑣
𝜀
𝐼=
𝑅
 Determine the direction of the induced current
using Lenz’s Law.
Assessment
(What is acceptable evidence to show desired results (rubrics, exam, etc.)? Attach Copy
During the Smart Notebook lesson designed to introduce concepts, students will be continually questioned on these
concepts using a combination of class work/homework questions and the SMART Response system. Classwork and
Homework questions will be discussed as a class and misconceptions will be addressed by the teacher prior to the
formal evaluations listed below.



Faraday’s Law Quiz
Len’s Law Quiz
Electromagnetic Induction Test
Other assessments on the NJCTL website are optional and can be used as needed.
(What is the sequence of activities, learning experiences, etc, that will lead to desired results (the plan)?
Day
1
Topic
Classwork
Homework**
Flux and Induced EMF
Presentation slides 1-23
Problems 1-6
Free Response 1, 2
MC 1-10
2
Faraday’s Law of Induction
Presentation slides 24-37
Problems 7-16
Free Response 3, 4
MC 11-20
3
Faraday’s Law Quiz +
Lenz’s Law
Quiz + Presentation slides
38-46
Problems 17-28
Free Response 5, 6
MC 21-30
4
EMF Induced in a moving
conductor
Presentation slides 47-55
Problems 29-34
Free Response 7, 8, 9
5
Electromagnetic Induction
Applications
Presentation slides 56-76
Problems 35-37
Free Response 10, 11, 12
6
Review
Review FR
MC 31-50
7
Review
Review MC
Study for test
8
Test
EM Induction Test
Review next unit
* It may not be possible to complete labs in the order stated due to lab schedules. Other labs on the
NJCTL website are option and can be used as needed.
**HW Problems are currently not scaffolded from least to most difficult, but are instead listed in order of
topic. Teacher should pay special attention at the end of each class period when assigning HW so that
only problems related to the topic that was taught are being assigned.