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Multimeter, digital or analog
Assorted batteries
One light-emitting diode (Radio Shack
catalog # 276-026 or equivalent)
Small "hobby" motor, permanent-magnet type
(Radio Shack catalog # 273-223 or equivalent)
Two jumper wires with "alligator clip" ends
(Radio Shack catalog # 278-1156, 278-1157, or equivalent)
A multimeter is an electrical instrument capable of
measuring voltage, current, and resistance. Digital
multimeters have numerical displays, like digital clocks,
for indicating the quantity of voltage, current, or
resistance. Analog multimeters indicate these quantities by
means of a moving pointer over a printed scale.
Analog multimeters tend to be less expensive
than digital multimeters, and more beneficial as learning
tools for the first-time student of electricity. I strongly
recommend purchasing an analog multimeter before purchasing
a digital multimeter, but to eventually have both in your
tool kit for these experiments. |
