Tag Archive for 'rheostat'

Play Dough Resistor

Published in Science at Home and Lesson Plans. Tags: cross sectional area, current, current electricity, electricity, electricity and magnetism, experiment, lab, length, physics, play doh, play dough, resistance, resistivity, resistor, rheostat, voltage.

Materials

Needed per group:

½ can of play dough
Knife switch
4 alligator clip wires
Voltmeter
Ammeter
2 large paper clips, or long metal pins
Ruler
Power supply, voltage does not need to be variable

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Pencil Resistor

Published in Science at Home and Lesson Plans. Tags: circuit, cross sectional area, current, physics, resistance, resistor, rheostat, variable resistor, voltage.

Materials

6 Volt lantern battery or DC power supply
alligator clip wires (3)
small 6V light bulb
small light bulb holder
pencil
razor blade

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