When a 10-M Length of Metal Wire Is Connected to A to A 1.5

Multiple Choice

When a 1.0-m length of metal wire is connected to a $1.5 - \mathrm { V }$ battery, a current of $8.0 \mathrm {~mA}$ flows through it. What is the diameter of the wire? The resistivity of the metal is $2.24 \times 10 ^ { - 8 } \Omega \cdot \mathrm { m }$ .

A) $12 \mu \mathrm { m }$
B) $24 \mu \mathrm { m }$
C) $6.0 \mu \mathrm { m }$
D) $2.2 \mu \mathrm { m }$