Measuring electric current
I can measure current and describe the rule for current in a series circuit.
Measuring electric current
I can measure current and describe the rule for current in a series circuit.
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Lesson details
Key learning points
- An ammeter is used to measure the size of an electric current.
- An ammeter measures the current flowing through it without affecting the current in the circuit it is connected into.
- Electric current is measured in amps (A), which is short for amperes.
- The current in a series circuit is the same everywhere.
- Adding a component to a series circuit changes the current everywhere, on both sides of the component.
Keywords
Ammeter - An ammeter is a device that measures the current flowing in a circuit.
Amp - An ammeter measures the current in units called amps (A) which is short for amperes.
Series circuit - An ammeter is always placed in a series circuit so the electric current has to pass through it.
Common misconception
Pupils hold a consumption model of electric current in which it is used up in a circuit. They misuse the terms: voltage, current and electricity and choose a voltmeter to measure current.
Get pupils to investigate the size of current through a range of different conductors (and insulators) with an ammeter in a simple circuit. This will help them familiarise themselves with it and its use.
To help you plan your year 8 science lesson on: Measuring electric current, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 8 science lesson on: Measuring electric current, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 3 science lessons from the Series circuits unit, dive into the full secondary science curriculum, or learn more about lesson planning.
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Lesson video
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Starter quiz
6 Questions
a tiny negatively charged particle
this can be either negative or positive
a component that pushes out and pulls in electrons
Exit quiz
6 Questions
