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P1 4.2 Electrical Circuits. Starter: Draw and name these symbols: Add any others you know. . Learning Objectives. MUST: be able to draw and name common circuit symbols SHOULD: know the difference between a series and parallel circuit
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P1 4.2Electrical Circuits Starter: Draw and name these symbols: Add any others you know.
Learning Objectives MUST: be able to draw and name common circuit symbols SHOULD: know the difference between a series and parallel circuit ASPIRE: know how to connect and ammeter and a voltmeter into a circuit
Key words Current: Flow of electrons around a circuit, measured in amperes (A) Potential Difference: The difference in energy between an electron going into a component and leaving a component, measured in Volts (V)
Current and Charge Current = Charge flow time taken Current is measured in Amperes (A) Charge flow is measure in Coulombs (C) Time taken is measured in seconds (s)
Questions • Complete summary questions on page153. • Create a circuit with a bulb, a variable resistor and a power pack • What happens to the brightness of the bulb when you change the variable resistor? • Replace the variable resistor with a diode. • See what happens when you switch the cabled round of the diode.