Essential Science 9-14 - Focus eLearning by Focus Educational Software ltd.

Click the switch to turn it on or off.

Change the number of cells in the battery by clicking on the small arrows or by clicking and dragging in the box. Click on any cell to reverse its direction.

This button shows ammeters so the current can be measured.

This button shows voltmeters so tha the voltage can be measured.

This button switches to a full screen view.

The animation shows a circuit with two light bulbs in series. Turn on the light by clicking on the switch. Click here for a photo of a real circuit

This picture shows the brightness of a single bulb connected to one battery. Compare this to the brightness of 2 bulbs connected to one battery. Are they brighter or dimmer?

Current
Add ammeters to the circuit. Change the number of batteries and measure the current each time. Write your results in a table and plot a graph of current against number of batteries.
Can you find a pattern in your results?

Voltage
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Add voltmeters to the circuit. Measure the voltage across the battery (V) and the voltages across each bulb, V1 and V2.

Can you find a pattern in your results?