Aims…
2.7 explain why a series or parallel circuit is more appropriate for particular applications, including domestic lighting
2.8 understand how the current in a series circuit depends on the applied voltage and the number and nature of other components
2.9 describe how current varies with voltage in wires, resistors, metal filament lamps and diodes, and how this can be investigated experimentally
2.10 describe the qualitative effect of changing resistance on the current in a circuit
2.11 describe the qualitative variation of resistance of light-dependent resistors (LDRs) with illumination and of thermistors with temperature
2.12 know that lamps and LEDs can be used to indicate the presence of a current in a circuit.
2.13 know and use the relationship between voltage, current and resistance:
voltage = current × resistance V = I × R
2.14 know that current is the rate of flow of charge
2.15 know and use the relationship between charge, current and time:
charge = current × time Q = I × t
2.16 know that electric current in solid metallic conductors is a flow of negatively charged electrons
2.17 understand why current is conserved at a junction in a circuit
2.18 know that the voltage across two components connected in parallel is the same
2.19 calculate the currents, voltages and resistances of two resistive components connected in a series circuit
2.20 understand that: voltage is the energy transferred per unit charge passed the volt is a joule per coulomb
2.21 know and use the relationship between energy transferred, charge and voltage:
Energy transferred = charge x voltage. E = Q x V.
Resources….
Video Clips…
Current and voltage in a circuit (more at stelissa.net)
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Current and voltage in a circuit (more at stelissa.net)
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Daniell cell - Volt Defined
The Daniell cell is a type of electrochemical cell invented in 1836 by John [...]
The Daniell cell is a type of electrochemical cell invented in 1836 by John Frederic Daniell, a British chemist and meteorologist, and consisted of a copper pot filled with a copper sulfate solution, in which was immersed an unglazed earthenware container filled with sulfuric acid and a zinc electrode. He was searching for a way to eliminate the hydrogen bubble problem found in the voltaic pile, and his solution was to use a second electrolyte to consume the hydrogen produced by the first. Zinc sulfate may be substituted for the sulfuric acid. The Daniell cell was a great improvement over the existing technology used in the early days of battery development. A later variant of the Daniell cell called the gravity cell or crowfoot cell was invented in the 1860s by a Frenchman named Callaud and became a popular choice for electrical telegraphy.
The Daniell cell is also the historical basis for the contemporary definition of the volt, which is the unit of electromotive force in the International System of Units. The definitions of electrical units that were proposed at the 1881 International Conference of Electricians were designed so that the electromotive force of the Daniell cell would be about 1.0 volts. With contemporary definitions, the standard potential of the Daniell cell at 25 °C is actually 1.10 VShow More 
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Sci Eye Electricity S096LS44 S120LS44
Scientific Eye Series 10 (1997) Eight programmes from the broadcast [...]
Scientific Eye Series 10 (1997)
Eight programmes from the broadcast schools' science series, each of which examines a single topic, with individual stories being used to illustrate more general scientific ideas.
The individual titles are: Safety; The Solar System; Air Forces; Electricity; Rust; Fire; Rocks; Limestone.Show More 
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Series and Parallel Circuits
Mr. Andersen contrasts series and parallel electrical circuits. A [...]
Mr. Andersen contrasts series and parallel electrical circuits. A simulation is used to visualize electron flow through both circuit types.
Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Atribution LicenseShow More 
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GCSE Physics - Components #18
This video covers: - The symbols of all the main components you need to [...]
This video covers:
- The symbols of all the main components you need to know
- What LEDs are
- The graphs and uses of LDRs and thermistors
General info:
- Suitable for all GCSE and IGCSE courses
- Suitable for higher and foundation tiers
- Suitable for triple and combined science
Exam board specific info:
AQA - Everything is relevant to your course!
IGCSE Edexcel - Everything is relevant to your course!
Edexcel - Everything is relevant to your course!
OCR 21st Century - Everything is relevant to your course!
OCR Gateway - Everything is relevant to your course!Show More 
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Diodes - GCSE Physics
This video introduces diodes. These small components work like a one way [...]
This video introduces diodes. These small components work like a one way valve, so the current only flows one way. If the potential difference is too great and the diode is connected the wrong way round, then the diode will break. Connected the right way round, a diode has a very small resistance for large values of potential difference.
The most common diode is the light emitting diode, an LED. An LED only emits light if it is connected to a circuit in the direction.
A diode is represented by a triangle connected to a line within a circle. The I-V graph of a diode is very distinctive because it only allows current to flow through one way.
Thanks for watching,
Lewis
Relevant for GCSE Physics 9-1 in the following exam boards:
AQA (including Trilogy)
Edexcel
OCR A
OCR B
WJEC
CIE (Cambridge International Examinations) IGCSE (Physics Higher only)
Edexcel International IGCSE
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#diodes #gcsephysics #physicsonlineShow More 
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Relay Circuits
This one was a little bit tricky! Loose connection bit still shows the idea.
This one was a little bit tricky! Loose connection bit still shows the idea.
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Q4 and 5 5B SLG and 2C Elec and PD June 2018 iGCSE Physics
This is a quick video walkthrough of an Edexcel exam question. It is [...]
This is a quick video walkthrough of an Edexcel exam question. It is designed so you can look at questions which relate to questions from specific parts of the course.
It is taken from a real paper and I have used a real mark scheme which I have adapted for on-screen use. If you listen carefully it will give you a really good idea of what an examiner is looking for.Show More 
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Q8 2C Electrical Circuits June 2018 iGCSE Physics
This is a quick video walkthrough of an Edexcel exam question. It is [...]
This is a quick video walkthrough of an Edexcel exam question. It is designed so you can look at questions which relate to questions from specific parts of the course.
It is taken from a real paper and I have used a real mark scheme which I have adapted for on-screen use. If you listen carefully it will give you a really good idea of what an examiner is looking for.Show More
