1. The problem statement, all variables and given/known data Determine the length of the shunt if the c.s.a of the copper is 25cm^2. 2. Relevant equations R = ρ l/a Resistance of shunt is 0.5μΩ 3. The attempt at a solution Transposing to find l. l = AR/ρ =25^2x10^2 x 0.5x10-6/1.7x10-8 =7.4mm is the length of the shunt. Does this look feasible? Any guidance will be well received.