electric potential energy. electric charge measured in coulombs six million trillion electrons is...
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Electric Potential EnergyTRANSCRIPT
Electric Potential EnergyElectric Potential Energy
Electric ChargeElectric Charge Measured in COULOMBSMeasured in COULOMBS
Six million trillion electrons is about - 1 C. Six million trillion electrons is about - 1 C. Six million trillion protons is about + 1 C.Six million trillion protons is about + 1 C.
Electric Potential EnergyElectric Potential Energy
Electric Potential EnergyElectric Potential Energy This spring has This spring has
more SPE when more SPE when it is compressedit is compressed
Electric Potential EnergyElectric Potential Energy This spring has This spring has
more PE when it is more PE when it is compressedcompressed
Likewise, these Likewise, these charges will have charges will have more potential more potential energy when they energy when they are pushed closerare pushed closer
Electric Potential EnergyElectric Potential Energy PE equals the amount of work done to PE equals the amount of work done to
move a charge from one place to move a charge from one place to another. another.
Electric Potential EnergyElectric Potential Energy
Which will have the larger electric Which will have the larger electric potential energy?potential energy?
Electric Potential EnergyElectric Potential Energy
A – because it requires work to move it A – because it requires work to move it away from the negative charge.away from the negative charge.
Electric Potential (volts)Electric Potential (volts) EP = work/chargeEP = work/charge
Electric Potential (volts)Electric Potential (volts) ExampleExample: 1000 joules of work is done to: 1000 joules of work is done to
move the charge q from far away to the move the charge q from far away to the place indicated. place indicated.
If q = 10 C, what is the electric potentialIf q = 10 C, what is the electric potentialat the new location?at the new location?
Electric Potential (volts)Electric Potential (volts) ExampleExample: 1000 joules of work is done to: 1000 joules of work is done to
move the charge q from far away to the placemove the charge q from far away to the placeindicated. indicated.
If q = 10 C, what is the electric potentialIf q = 10 C, what is the electric potentialat the new location?at the new location?
Voltage = work/chargeVoltage = work/charge V = 1000 J/10C = 100 VoltsV = 1000 J/10C = 100 Volts
Electric Potential (volts)Electric Potential (volts) What if the charge in the previous What if the charge in the previous
problem were now 100 C instead of 10? problem were now 100 C instead of 10? What would happen to the EP?What would happen to the EP?
Electric Potential (volts)Electric Potential (volts) What if the charge in the previous What if the charge in the previous
problem were now 100 C instead of 10? problem were now 100 C instead of 10? What would happen to the EP?What would happen to the EP?
IT WOULD BE THE SAME!!!IT WOULD BE THE SAME!!! Work would also increaseWork would also increase
Electric Potential (volts)Electric Potential (volts) Electric potential Electric potential
is associated with is associated with LOCATION, not LOCATION, not CHARGECHARGE
Electric Potential vs Electric Potential vs Potential EnergyPotential Energy
Which charge has Which charge has more electric more electric potential?potential?
Which has more Which has more potential energy?potential energy?
Is 5000 Volts Dangerous?Is 5000 Volts Dangerous?
Is 5000 Volts Dangerous?Is 5000 Volts Dangerous? NOPE!NOPE! When 1 million When 1 million
electrons are electrons are added to a added to a neutral balloon, neutral balloon, it has an electric it has an electric potential of potential of 5000 volts5000 volts
Potential Difference Potential Difference (voltage)(voltage)
Difference in electric potential between Difference in electric potential between two points.two points.
Potential Difference Potential Difference (voltage)(voltage)
Difference in electric potential between Difference in electric potential between two points.two points.
Potential difference between A and B is 0Potential difference between A and B is 0A B
Potential Difference Potential Difference (voltage)(voltage)
Difference in electric potential between Difference in electric potential between two points.two points.
Now there is a potential differenceNow there is a potential differenceA
B
Potential DifferencePotential Difference Batteries provide Batteries provide
potential difference potential difference between one end of the between one end of the circuit and the othercircuit and the other
Potential DifferencePotential Difference Batteries provide Batteries provide
potential difference potential difference between one end of the between one end of the circuit and the othercircuit and the other
Charges flow from high Charges flow from high to low electric potentialto low electric potential
Potential Difference Potential Difference (voltage)(voltage)
Potential difference = difference in PE (J)Potential difference = difference in PE (J)(V)(V) ______________________________________
charge (C)charge (C)