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Success Criteria:
I am able to interpret circuit diagrams and understand the symbols representing different components, accurately tracing the path of the electric current.
I am able to grasp the concept of conventional current as the flow of positive charges in a circuit, contrasting it with the actual movement of electrons in the opposite direction.
I am able to calculate the total charge transferred in a circuit over time using the equation Q = It, and I can use this understanding to solve problems involving the transfer of charge.
Fun Fact
Conventional current originates from Benjamin Franklin's assumption that electrical charge moved from positive to negative. However, later discoveries revealed that electrons actually flow from negative to positive, yet the convention of using positive charge flow in circuit analysis persisted.
Key terms
Electric Current is the flow of electric charge through a conductor, typically measured in Amperes (A).
Electric Circuit A closed loop of a conductive material which charges can flow through. Electron flow goes from negative terminal to positive terminal.
Circuit Diagrams are a visual representation of an electrical circuit, showing the connections between components using standardized symbols.
Conventional Current is the flow of positive charge in a circuit, opposite to the actual movement of electrons. It is a simplification used to describe the direction of current flow in circuits, where positive charges are considered to flow from the positive terminal of a power source to the negative terminal.
Current is the flow of electric charge through a conductor, measured in amperes (A). It represents the rate of flow of charge past a given point in a circuit, with one ampere equivalent to one coulomb of charge passing through a point per second.
Ammeters are electrical instruments used to measure electric current in a circuit. They are connected in series with the circuit components through which the current is to be measured.
Learning Tasks
8.2 Knowledge and Understanding questions p.220
Making a simple circuit
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