Question Solved1 Answer A bar of silicon is 4 cm long with a circular cross section. If the resistance of the bar is 320 Q at room temperature, what is the cross-sectional radius of the bar? The cross-sectional radius of the bar is mm.

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Transcribed Image Text: A bar of silicon is 4 cm long with a circular cross section. If the resistance of the bar is 320 Q at room temperature, what is the cross-sectional radius of the bar? The cross-sectional radius of the bar is mm.
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Transcribed Image Text: A bar of silicon is 4 cm long with a circular cross section. If the resistance of the bar is 320 Q at room temperature, what is the cross-sectional radius of the bar? The cross-sectional radius of the bar is mm.
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A Ber of silicon.{:[" length "=4cm],[" Resistance "=320r],[" Resistivits of silicon at rom temperatire "=2.3 xx10^(3)rin],[R=(ll)/(a)] ... See the full answer