# 11 Physics - Electricity and Electromagnetic Induction Unit

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As the last unit, there is often little time left. Concepts taught “in a nutshell” may be expanded upon. Lessons can be broken up with demonstrations or student activities. If time provides the concepts of transformers and alternating current may also be introduced.

01 – Electrical Energy and Power Plants

Reviews concepts from the energy unit as well as the grade 9 curriculum. This is assigned as reading from the textbook with the powerpoint as support or a lesson depending on the available time.

02 – Electricity and Circuits

The concepts of electricity, current, electrical energy, electric potential, electric potential difference and resistance are covered. Students will be introduced to rules for basic series and parallel circuits and solve problems that involve Ohm’s Law.

*Students will struggle with the concepts of electrical energy, electric potential, and electric potential difference. Comparisons can be drawn to gravitational potential energy as students should recognize that it is technically a change in energy (in the same manner that the electric potential difference is) rather than an energy reading at a specific point. They will spend more time on this in grade 12.

03 – Circuit Analysis (mixed)

A few examples of mixed circuits are discussed. A video is available through Crash Course Physics (available on youtube) which can help students with a complex circuit. Time is given to solve problems from their text and the included worksheet (answer key provided).

*this would be a good time to give students an opportunity to build circuits and determine appropriate values using voltmeters and ammeters in order to test their theoretical understanding

04 – Electromagnetism in a Nutshell (condensed Chapter 12)

The concept of fields is introduced and comparisons are made between gravitational, electric, and magnetic. Field lines are explored. Concepts of Oersted’s discovery and Faraday’s motor are introduced. Right hand rules are explored.

*Due to the quantity of material a student copy of the powerpoint has also been included which may be printed (4 slides to a page works nicely) in order to allow students to fill in the blanks.

*The importance of using conventional current methods with right hand rules should be emphasized

*It is interesting to note how many animals utilize Earth’s magnetic fields. A few handouts regarding this are also included to foster discussion if time permits.

05 – Electromagnetic Induction in a Nutshell (condensed Chapter 13)

The concepts of electromagnetism are briefly reviewed. The law of electromagnetic induction and Lenz’s law are discussed.

*Due to the quantity of material a student copy of the powerpoint has also been included which may be printed (4 slides to a page works nicely) in order to allow students to fill in the blanks.

This marks the end of what I am typically able to cover in the Electricity and Electromagnetism Unit, as well as the end of the course.A practice test is given to students in order to prepare for this portion of the final exam. Solutions are included.

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