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

question 135

Multiple Choice

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

• A)12 μm
• B)6.0 μm
• C)24 μm
• D)2.2 μm

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