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Electricity
Revision and exam practice for Electricity.
20
Objectives
10
Flashcards
10
Questions
90 min
Study time
OcrGcsePhysics A GatewayElectricity
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20 objective pages available
Understanding Electric Charge: The Fundamental Property of Matter1 objectives
- Communicate the key features of charge is a property of all matter and that there are positive and negative charges.
Understanding Static Electricity and Its Effects1 objectives
- Communicate the key features of the production of static electricity, and sparking, by rubbing surfaces, and evidence that charged objects exert forces of attraction or repulsion on one another when not in contact.
Understanding Static Electricity through Electron Transfer1 objectives
- Account for the way transfer of electrons between objects can explain the phenomena of static electricity.
Understanding Electric Fields and Static Electricity1 objectives
- Account for the concept of an electric field and how it helps to explain the phenomena of static electricity.
Understanding Electric Current: The Flow of Charge1 objectives
- Retrieve and apply knowledge of current is a rate of flow of charge (electrons) and the conditions needed for charge to flow.
Current in a Series Circuit1 objectives
- Retrieve and apply knowledge of current has the same value at any point in a single closed loop.
Understanding the Relationship between Charge, Current, and Time1 objectives
- Retrieve and apply knowledge of and use the relationship between quantity of charge, current and time.
Understanding Series and Parallel Circuits1 objectives
- Communicate the key features of the differences between series and parallel circuits.
Understanding DC Circuits and Circuit Diagrams1 objectives
- Develop knowledge and skill in d.c. circuits with the conventions of positive and negative terminals, and the symbols that represent common circuit elements.
Understanding Current, Potential Difference, and Resistance1 objectives
- Develop knowledge and skill in recall that current, , depends on both resistance, , I V and potential difference, , and the units in which these are measured.
Understanding Resistance: Ohm's Law and Variable Resistors1 objectives
- Develop knowledge and skill in V recall and apply the relationship between , and , I and that for some resistors the value of R remains constant but that in others it can change as the current changes.
Resistance in Electrical Components1 objectives
- Develop knowledge and skill in explain that for some resistors the value of remains constant but that in others it can change as the current changes.
Designing and Using Simple Circuits1 objectives
- Account for the design and use of circuits to explore such effects.
Understanding Linear and Non-Linear Circuit Elements through Graphs1 objectives
- Apply graphs to explore whether circuit elements are linear or non-linear.
Understanding I-V Graphs for Circuit Elements1 objectives
- Apply graphs and relate the curves produced to the function and properties of circuit elements.
Understanding Resistance in Series and Parallel Circuits1 objectives
- Account for why, if two resistors are in series the net resistance is increased, whereas with two in parallel the net resistance is decreased (qualitative explanation only).
Understanding DC Series and Parallel Circuits1 objectives
- Work out the currents, potential differences and resistances in d.c. series and parallel circuits.
Direct Current (d.c.) Circuits for Measurement and Testing1 objectives
- Account for the design and use of d.c. circuits for measurement and testing purposes.
Power Transfer in Electrical Circuits1 objectives
- Account for the way the power transfer in any circuit device is related to the potential difference across it and the current, and to the energy changes over a given time.
Understanding Series Circuits and Electrical Quantities1 objectives
- Use knowledge of the equations relating potential difference, current, quantity of charge, resistance, power, energy, and time, and solve problems for circuits which include resistors in series, using the concept of equivalent resistance.
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Practice preview
- Unofficial practice material Explain how changes in potential difference affect the current in a circuit, assuming the resistance remains constant. Include the correct units for current and potential difference in your explanation. [4 marks]
- Two objects are rubbed together, and one becomes positively charged. What must have happened?
- In a simple series circuit comprising a power source and two resistors, where would the current be highest?
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