A carbon rod with a radius of 0.3 mm is used to make a resistor. What length of the carbon rod should be used to make a 13.4 2 resistor? The resistivity of this material is 2 x 10-5 2. m. Answer in units of mm.

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A carbon rod with a radius of 0.3 mm is used
to make a resistor.
What length of the carbon rod should be
used to make a 13.4 2 resistor? The resistivity
of this material is 2 x 10-5 2. m.
Answer in units of mm.
Transcribed Image Text:A carbon rod with a radius of 0.3 mm is used to make a resistor. What length of the carbon rod should be used to make a 13.4 2 resistor? The resistivity of this material is 2 x 10-5 2. m. Answer in units of mm.
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