Topic: Electricity and Magnetism
Electricity and magnetism is divided into two chapters:
1. Electrostatics
2. Electric circuits
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For each chapter you'll find:
a. Workbook chapter
b. Video lessons
c. Practice test and memo
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The interactive workbook chapter complements the video lessons available on YouTube. Download and print the workbook chapter, click on the link to the video lesson, and fill in the workbook chapter with definitions and examples as you follow along. At the end of each chapter (corresponding to the last video lesson) are past paper question examples.
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To assess your understanding, I encourage you to complete the practice test and check your answers using the memo at the end of each chapter.
1. Electrostatics
Objectives:
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Understand that all materials are made up of positively charged protons and negatively charged electrons.
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Describe an object as neutral when it has an equal number of protons and electrons.
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Describe positively charged objects as electron deficient and negatively charged objects as having excess of electrons.
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Describe how objects can be charged by rubbing and understand triboelectric charging.
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State that like charges repel and opposite charges attract.
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State the principle of conservation of charge.
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Apply the principle of conservation of charge using:
Q_(per sphere)=(Q_1+Q_2)/2 - State the principle of charge quantization and apply the principle:
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Q=nq_e
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Explain how charged objects can attract uncharged insulators due to polarization of molecules.
2. Electric circuits
Objectives:
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Revise circuit symbols.
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Define current.
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Apply the formula for current: I=Q/t
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Define voltage, potential difference, EMF and terminal potential difference.
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Apply the formula for voltage: V=E/Q
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Indicate the direction of conventional current in circuit diagrams using arrows on a circuit diagram.
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Correctly connect an ammeter and a voltmeter to a circuit diagram.
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Explain why batteries ‘go flat’.
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Define resistance.
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Apply the formula for resistance: R=V/I
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Provide a microscopic description of resistance.
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State the factors that affect the resistance of a given material.
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Revise the rules of series circuits (voltage dividers) and apply them to circuit problems.
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Revise the rules of parallel circuits (current dividers) and apply them to circuit problems.