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# Year 11 Physics

## Module 4 | Electricity and magnetism

### Content 2: Electric circuits

#### Lesson 1 | Electric current in metals

• investigate the flow of electric current in metals and apply models to represent current, including:
$I\: = \: \frac{q}{t}$ (ACSPH038)

#### Lesson 2 | Ohm's law

• investigate quantitatively and analyse the rate of conversion of electrical energy in components of electric circuits, including the production of heat and light, by applying and E = Pt and variations that involve Ohm’s Law (ACSPH042)

#### Lesson 3 | Power and energy conversions in circuits

• investigate quantitatively and analyse the rate of conversion of electrical energy in components of electric circuits, including the production of heat and light, by applying P = VI and E = Pt and variations that involve Ohm’s Law (ACSPH042)

• investigate quantitatively the application of the law of conservation of energy to the heating effects of currents, including the application of P = VI and variations of this involving Ohm’s Law (ACSPH043)

#### Lesson 4 | Power, current and voltage

• investigate quantitatively the application of the law of conservation of energy to the heating effects of electric currents, including the application of P = VI and variations of this involving Ohm’s Law (ACSPH043)

#### Lesson 5 | Series and parallel circuits - voltage and current

• investigate qualitatively and quantitatively series and parallel circuits to relate the flow of current through the individual components, the potential differences across those components and the rate of energy conversion by the components to the laws of conservation of charge and energy, by deriving the following relationships (ACSPH038, ACSPH039, ACSPH044):
– Kirchoff’s current law – conservation of charge
– Kirchoff’s voltage law – conservation of energy

#### Lesson 6 | Series and parallel circuits - resistance

• investigate qualitatively and quantitatively series and parallel circuits to relate the flow of current through the individual components, the potential differences across those components and the rate of energy conversion by the components to the laws of conservation of charge and energy, by deriving the following relationships (ACSPH038, ACSPH039, ACSPH044):

– $\sum I = 0$ (Kirchhoff’s current law – conservation of charge)

– $\sum V = 0$ (Kirchhoff’s voltage law – conservation of energy)

$R_{Series}\: = \: R_{1}\: +\: R_{2}\: +\: .\ .\ .\ \: +R_{n}$

$\frac{1}{R_{Parallel}}\: = \: \frac{1}{R_{1}}\: +\: \frac{1}{R_{2}}\: +\: .\ .\ .\ \: +\: \frac{1}{R_{n}}$