Solution to Frame 73
FRAME 74
When voltage decreases, then current
increases
____________________ .
Solution to Frame 74
FRAME 75
In most cars, you can make the dashboard light
decreases
dimmer or brighter by turning a knob back and
forth. What you are really turning is a variable
resistor: The symbol for a variable resistor is
shown below.
Label the variable resistor in the circuit below.
Solution to Frame 75
FRAME 76
A variable resistor is a device that opposes the flow
of current. As its name implies, the amount of
resistance that a variable resistor offers to current
can be ____________________.
MD0902
1-19