- #1
bob12345
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Homework Statement
A 2.5 cm length of tungsten filament in a
small lightbulb has a resistance of 0.041
.
Find its diameter. (The resistivity is
5.6 × 10−8
· m).
Answer in units of mm.
Homework Equations
R=P(L/2pi*rsquared)
The Attempt at a Solution
i keep getting 20856 m as my answer but it is wrng when i entr it i plugged in everything and made sure everything was to the right unit so don't know what is wrong