1. Measuring Current Learning Objective: Use an ammeter with care
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Measuring Current
Learning Objective:
Use an ammeter with care
Measure and record current in simple series circuits A
Starter: Drawing Circuit Diagrams

2. Starter: Draw Circuit Diagrams for the following
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Starter: Draw Circuit Diagrams for the following A B D C

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Series Circuit
This is a simple series circuit. In a simple series circuit, everything is connected in one loop across the terminals of the battery. There are no places (junctions) where the current can split
lamps

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Series
The current goes in one loop only

5. Circuits digrams 1) A cell, a bulb and a switch “in series”
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1) A cell, a bulb and a switch “in series”
2) A battery of cells, a switch and two bulbs in series

6. Measuring electric current
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Measuring electric current
We can measure the amount of electric current flowing through a circuit using a device called an “ammeter”. A

7. “THIS IS THE SAME CIRCUIT”
Measuring Current
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Method
“THIS IS THE SAME CIRCUIT”
Build the first circuit. Write down the reading on the ammeter.
Now build the 2nd circuit. Write down the reading on the ammeter.
Build the 3rd circuit and write down the ammeter reading. A A A

8. Current in a series circuit
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Current in a series circuit
2 amps here
2 amps here A A A
2 amps here
The current in a series circuit is THE SAME at any point

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Conclusion
The reading on the _____________ shows the amount of _____________ flowing around the _____________ .
The current is the _____________ everywhere in the _____________ . The current is not _____________ by the bulbs.
Key words: ammeter circuit current same used up