# Electricity introPage 1

#### WATCH ALL SLIDES

Slide 1 Electricity

Slide 2 Applications of Electrostatics

Slide 3 ## Electric Charge

Measured in COULOMBS

Six million trillion electrons is about - 1 C.

Six million trillion protons is about + 1 C.

Slide 4 ## Electric Potential Energy

Slide 5 Electric Potential Energy

This spring has more SPE when it is compressed

Slide 6 Electric Potential Energy

This spring has more SPE when it is compressed

Likewise, these charges will have more potential energy when they are pushed closer

Slide 7 Electric Potential Energy

PE equals the amount of work done to move a charge from one place to another.

Slide 8 Slide 9 Electric Potential Energy

Which will have the larger electric potential energy?

Slide 10 Electric Potential Energy

A – because it requires work to move it away from the negative charge.

Slide 11 ## Electric Potential (volts)

EP = work/charge

Slide 12 Electric Potential (volts)

Example: 1000 joules of work is done to move the charge q from far away to the place indicated. If q = 10 C, what is the electric potential at the new location?

Slide 13 Electric Potential (volts)

Example: 1000 joules of work is done to move the charge q from far away to the place indicated. If q = 10 C, what is the electric potential at the new location?

Voltage = work/charge

V = 1000 J/10C = 100 Volts

Slide 14 Electric Potential (volts)

What if the charge in the previous problem were now 100 C instead of 10? What would happen to the EP?

Slide 15 Electric Potential (volts)

What if the charge in the previous problem were now 100 C instead of 10? What would happen to the EP?

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