4.2 potential difference ( pd ) and power potential difference: * is defined as the work done (or...
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![Page 1: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/1.jpg)
4.2 Potential difference ( pd ) and power
Potential Difference:
* is defined as the work done (or energy transfer) per unit charge
V (Volt) = W (work done, J) Q (charge, C)
B
A +
+
If 1J of work is done in moving 1 C of positive charge from A to B then the Pd is 1V
1V = 1 J / C
![Page 2: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/2.jpg)
4.2 Potential difference ( pd ) and power
Potential Difference:
* is defined as the work done (or energy transfer) per unit charge
V (Volt) = W (work done, J) Q (charge, C)
B
A +
+
If 1J of work is done in moving 1 C of positive charge from A to B then the Pd is 1V
1V = 1 J / C
![Page 3: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/3.jpg)
4.2 Potential difference ( pd ) and power
Potential Difference:
* is defined as the work done (or energy transfer) per unit charge
V (Volt) = W (work done, J) Q (charge, C)
B
A +
+
If 1J of work is done in moving 1 C of positive charge from A to B then the Pd is 1V
1V = 1 J / C
![Page 4: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/4.jpg)
4.2 Potential difference ( pd ) and power
Potential Difference:
* is defined as the work done (or energy transfer) per unit charge
V (Volt) = W (work done, J) Q (charge, C)
B
A +
+
If 1J of work is done in moving 1 C of positive charge from A to B then the Pd is 1V
1V = 1 J / C
![Page 5: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/5.jpg)
4.2 Potential difference ( pd ) and power
Potential Difference:
* is defined as the work done (or energy transfer) per unit charge
V (Volt) = W (work done, J) Q (charge, C)
B
A +
+
If 1J of work is done in moving 1 C of positive charge from A to B then the Pd is 1V
1V = 1 J / C
![Page 6: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/6.jpg)
Voltage or pd:* is electrical pressure* causes current to flow* is measured in Volts (V) with a voltmeter in parallel
1.5 V 1.5 V
1.5 V
1.5 V 1.5 V 1.5 V
1.5 VV
![Page 7: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/7.jpg)
Voltage or pd:* is electrical pressure* causes current to flow* is measured in Volts (V) with a voltmeter in parallel
1.5 V 1.5 V
1.5 V
1.5 V 1.5 V 1.5 V
1.5 VV
![Page 8: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/8.jpg)
Voltage or pd:* is electrical pressure* causes current to flow* is measured in Volts (V) with a voltmeter in parallel
1.5 V 1.5 V
1.5 V
1.5 V 1.5 V 1.5 V
1.5 VV
![Page 9: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/9.jpg)
Energy from a battery
e……..
w….
e…….
E……..
Voltages in series circuits
The cell gives electrical potential energy to each electron – even when not connected
* Work is done by an electron when passing through a component.* Some of the electron’s electrical potential energy is transferred to heat and light.* The work done per coulomb of charge is called the potential difference across the component
-- J J J
J
![Page 10: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/10.jpg)
Energy from a battery
e……..
w….
e…….
E……..
Voltages in series circuits
The cell gives electrical potential energy to each electron – even when not connected
* Work is done by an electron when passing through a component.* Some of the electron’s electrical potential energy is transferred to heat and light.* The work done per coulomb of charge is called the potential difference across the component
-- J J J
J
![Page 11: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/11.jpg)
Energy from a battery
e……..
w….
e…….
E……..
Voltages in series circuits
The cell gives electrical potential energy to each electron – even when not connected
* Work is done by an electron when passing through a component.* Some of the electron’s electrical potential energy is transferred to heat and light.* The work done per coulomb of charge is called the potential difference across the component
-- J J J
J
![Page 12: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/12.jpg)
Energy from a battery
e……..
w….
e…….
E……..
V V
VVoltages in series circuits
![Page 13: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/13.jpg)
Energy from a battery
e……..
w….
e…….
E……..
V
V V
3 V4
3 V4
1.5 VVoltages in series circuits
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The higher the v……... of the battery the more energythe electrons can t………... to the bulbs.
The bulb f………. heats up. Some of this heat energy is transformed to l…... energy.
voltagetransferfilament
light
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V
V V
Voltages in series circuits
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V
V V
3.0 V
1.5 V 1.5 V
In a series circuit the voltage is shared across components
Voltages in series circuits
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A
In a series circuit the voltage is shared across components
V V
3.0 V
1.5 V 1.5 V
V 0.2 A
Voltages in series circuits
![Page 18: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/18.jpg)
A
In a series circuit the voltage is shared across components
V V
3.0 V V
V V
0.1 A
Voltages in series circuits
![Page 19: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/19.jpg)
A
In a series circuit the voltage is shared across components
V V
3.0 V V
V V
3 V4
3 V4
3 V4
3 V4
0.1 A
Voltages in series circuits
![Page 20: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/20.jpg)
A
In a series circuit the voltage is shared across components
V V
3.0 V V
V V
3 V4
3 V4
3 V4
3 V4
0.1 A
Voltages in series circuits
Each bulb adds more resistance to the series circuit.
The current flowing drops.The voltage across each bulb drops
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Problem:
If 30 J of work is done when 5C of charge passes through a component,calculate the potential difference across the component.
V = 30 J = 6 V 5 C
V (Volt) = W (work done, J) Q (charge, C)
4.2 Potential difference ( pd ) and power
![Page 22: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/22.jpg)
Problem:
If 30 J of work is done when 5C of charge passes through a component,calculate the potential difference across the component.
V = 30 J = 6 V 5 C
V (Volt) = W (work done, J) Q (charge, C)
4.2 Potential difference ( pd ) and power
![Page 23: 4.2 Potential difference ( pd ) and power Potential Difference: * is defined as the work done (or energy transfer) per unit charge V (Volt) = W (work done,](https://reader035.vdocuments.us/reader035/viewer/2022070308/551b9106550346a10a8b5979/html5/thumbnails/23.jpg)
EMF Electromotive force of a source of electricity:
* is defined as the electrical energy produced per unit charge passing through the source
4.2 Potential difference ( pd ) and power
W ( J) = (Volt) X Q ( C) Electrical energy
produced when charge Q moves through the source
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For a component with
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For a component with
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For a component with
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For a component with
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For a component with
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For a component with
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For a component with
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