Current and Circuits in Electrical Systems
Learn about current, resistance, and circuits in this educational lesson. Explore series and parallel circuits, calculating currents, and understanding potential difference. Engage in practical activities to deepen your understanding.
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Presentation Transcript
L1 Circuit symbols L11 National Grid L2 Current & charge L3 Potential difference L4 Resistance & Ohm s Law L5 Power & energy L6 Electrical power L7 Current in series & parallel L8 Potential difference in series & parallel L9 Sensing circuits L10 Three pin plug Lesson Sequence Pupils should have been taught to: Pupils will be taught: Students know the definition of current & how to calculate currents in simple examples. The ideas taught in this lesson will expanded upon in the lesson on potential difference in series & parallel Future Learning Specification Prior Learning
SciDoc Current in series & parallel Current in series & parallel Last Lesson Last Term Last Year Stretch & Challenge I do We do You do Test I do We do You do Do Now
SciDoc Keywords Learning Objectives Keywords Current Amps Series Parallel Junction Recall that current is the same everywhere in a series circuit. Recall that current splits in a parallel circuit. Calculate currents in series and parallel circuits. I do We do You do Test I do We do You do Do Now
In a series circuit the current flow through one continuous path. This means that the current must be the same at all parts in a series circuit. SciDoc Stretch Both of the lamps above have a resistance of 3 . Calculate the potential difference supply of the battery. I do We do You do Test I do We do You do LO:
In a parallel circuit, there are different paths for the current to take. SciDoc Current splits in a parallel circuit. Stretch: Say we have a circuit as above, but one of the bulbs has more resistance than the other? What happens to the current? What if the resistance of one bulb is three times the other? I do We do You do Test I do We do You do LO:
SciDoc Practical Practical Equipment you will need: -Battery x2 -Bulb x2 -Ammeter x1 -Connecting wires x5 I do We do You do Test I do We do You do LO:
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SciDoc Worksheet Worksheet Complete the worksheet! I do We do You do Test I do We do You do LO:
SciDoc Basic answers Basic answers I do We do You do Test I do We do You do LO:
SciDoc Medium answers Medium answers I do We do You do Test I do We do You do LO:
SciDoc Hard answers Hard answers 1. Both 6A- current in the parallel branches add together when the branches join. 2. 1A- the 3A is split between the two branches, the current through X plus the current through Y must add up to 3A 3. 26/4=6.5A 4. 0.20+0.10=0.30A I do We do You do Test I do We do You do LO:
SciDoc Struggle time! Struggle time! Exam question so exam conditions! You have 6 minutes. I do We do You do Test I do We do You do LO:
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