4B_SP10_HW06

# 4B_SP10_HW06 - Print Assignment: 4B Homework 06 :false

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4B Homework 06 *Question 1 A potential difference of 3.32 nV is set up across a 2.13 cm length of copper wire that has a radius of 2.29 mm. How much charge (in C) drifts through a cross section in 3.11 ms? Assume that the resistivity of copper is 1.69 × 10 -8 Ω·m. Number 4.73E-7 Units C The number of significant digits is set to 3; the tolerance is +/-2% *Question 2 A certain wire has a resistance of 110 Ω. What is the resistance of a second wire, made of the same material, that is 1/4 as long and has 1/2 the diameter? Number 110 Units The number of significant digits is set to 2; the tolerance is +/-2% *Question 3 A wire is 0.94 m long and 1.2 mm 2 in cross-sectional area. It carries a current of 4.2 A when a 2.0 V potential difference is applied between its ends. Calculate the conductivity σ of the material of which this wire is made. Number 1600000 Units (Ω·m)-1 The number of significant digits is set to 2; the tolerance is +/-2% *Question 4 The figure shows wire section 1 of diameter

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## This note was uploaded on 11/17/2010 for the course PHYC 4B taught by Professor Afdsadsf during the Spring '09 term at City College of San Francisco.

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4B_SP10_HW06 - Print Assignment: 4B Homework 06 :false

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