Elenco Snaptricity® - Manual (Page 37)

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Educational Corner:
Triple Switching Voltmeter Project #27
5V
Electric Paths
The lamps are acting as
resistors, because they limit
the flow of electricity in the
circuit. As resistances are added in series, they add
together to reduce the
current.
5V
Set the slide switches (S5) to position C. Push the press
switch (S2); the meter measures the voltage across the
right lamp.
The slide switches control the left two lamps (L4),
individually. If the lamps are on (switch position B), the
battery voltage is split among them and less voltage will be
measured across the right lamp.
Operation
This is another example of how voltage divides as parts are
added in series.
Description
Build the circuit and set the meter (M5) on the 5V setting.
Assembly