# DateAssignment Mon TuesTextbook Page 399 #1,2,4 WedCalculating currents worksheet ThursTextbook page 405# 7, page 413 # 6 FriTextbook page 430 # 1,3,4,5.

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DateAssignment Mon TuesTextbook Page 399 #1,2,4 WedCalculating currents worksheet ThursTextbook page 405# 7, page 413 # 6 FriTextbook page 430 # 1,3,4,5 AIM: How is an electric charge formed?

Is the result of an electrical charge flowing Electrical charge is when matter experiences a force (movement)

Smallest particle of matter

Made up of 3 subatomic particles

1.PROTONS in the nucleus - Positive charge 2.NEUTRONS in the nucleus - No charge 3.ELECTRONS outside the nucleus - Negative charge

Protons Neutrons Electrons

How can charges be detected? Electroscope Metal rod with 2 thin metal leaves at 1 end

Charged object touches it  charge travels into leaves  leaves spread apart (Like charges repel)

Pulls objects together Between opposite charges (Opposites attract) Electrons & protons + -

Pushes objects apart Like charges repel Electrons repel each other Protons repel each other

# of protons equals # of electrons Makes atom neutral (no net charge) ATOMS are free of charge (neutral) when

Objects become charged when….. 1. Lose electrons, becomes positively charge 8 protons, 8 electrons = no charge Lose electron 8 protons, 7 electrons = Positively charged

2. Gain electrons, becomes negatively charged 8 protons, 8 electrons = no charge Gain electron 8 protons, 9 electrons = Negatively charged

Negative Positive ?

Charges can be transferred. Before the shoe scuffs against the carpet, both the sole of the shoe and them carpet are neutral. As the shoe scuffs the carpet, electrons are transported from the carpet to the sole of the shoe.

REDO INCORPORATE SLIDES BELOW REORDER CHANGE

Electricity Is the result of an electrical charge flowing

Inside an atom, electrons have a negative charge and protons have a positive charge. These particles attract each other. A charge is a measure of the extra positive or negative particles that an object has.

Static Electricity Static electricity is the charge that stays on an object. Unlike charges attract each other, and like charges repel each other.

The steady flow of electricity along a wire or a path called a circuit. Circuit means to “go around.” Current Electricity

Types of Circuits A series circuit is a circuit that has only one path for the current. A parallel circuit has more than one path for current to travel.

Lights in our homes are wired in parallel circuits.

Conductor A conductor is a material that current can pass through easily, like metals.

Resistor A resistor is a material that resists, but doesn’t stop the flow of current.

Insulator An insulator is a material that current cannot pass through easily, like plastic.

Electric Cell An electric cell supplies energy to move charges through a circuit, like a battery.

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