A potential difference of 13 V is found to produce a current of 0.42 A in a 2.8 m length of wire with a uniform radius of 0.45 cm. Find the following values for the wire.
a) Resistance
b) Resistivity
c) Conductivity
d) Electric field
a) a) 30.95 Ω
b) 1.38 × 10-7 Ωm
c) 7.23 × 10-7 S/m
d) Not applicable