| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Potential difference is the difference in energy between two parts of a circuit, and is measured in volts. |
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What is potential difference and what is it measured in? Measuring voltage and current in a series circuit |
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Electric current is the flow of charge and is measured in amperes.
KS4: Add 'rate of' to definition and then define the coulomb. |
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What is electric current? |
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Potential difference is measured using a Voltmeter which must be placed in parallel with a component. |
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What do we use to measure potential difference and how must we do it? |
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The charged particles able to move in a metal are electrons. So in a metal current is the flow of electrons. |
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What charged particles are able to move in a metal? |
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Current is measured using an Ammeter which must be placed in series in the circuit. |
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How can we describe current and how do we measure it? |
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Potential difference is a store of energy caused by the compressing of a charge particle's electric field. |
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What is the store of energy in potential difference caused by? |
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Charge can not be created, destroyed or be stored on a wire, therefore currents add where branches meet. |
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What happens to current when branches in a circuit meet and why? |
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Potential differences in series add up, for example adding cells - direction important. |
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What happens to the potential difference in a series circuit? |
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Battery and bulb (p.d.) ratings need to be matched otherwise too much energy transfer will cause the bulbs to melt. |
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What happens if we don't match the potential difference ratings of the battery to the bulb in a circuit? |
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