1. The problem statement, all variables and given/known data The terminals of a 0.70 Vwatch battery are connected by a 70.0-m-long gold wire with a diameter of 0.100 mm. What is the current in the wire? 2. Relevant equations V = IR R = pL/a 3. The attempt at a solution I try to find resistance first, resistivity of gold is 2.2 * 10 ^-8 Area of the wire is a = pi * r ^ 2 r = ( 0.1 * 10^-3 ) /2 So I found a = 7.85 * 10^-9 Then, R = 2.2 * 10^-8 * 70 / (7.85 * 10^-9) = 196.1 I plug this in to V/R = I, .70/196.1 = .00357 = 3.57 mA, but this answer ends up being wrong. Any help on where I went wrong would be appreciated, thanks.