1. The problem statement, all variables and given/known data The resistivity of a potentiometer wire is (40×10^-8) ohm-m and the area of cross section is (8×10^-6)m^2.If 0.2 amp current is flowing through the wire,then the potential gradient will be?? 2. Relevant equations 1.Resistance=[(Resisitvity)×(Length)]/(Cross-sectional area) 2.V=IR 3.Potential gradient of wire= (Potential difference across wire)/(Length of wire) 3. The attempt at a solution ▪Assuming the length of the wire to be l, and using formula 1,we can find the resistance of the wire. ▪Using formula 2,potential difference across the wire can be found,since we know the current flowing through the wire(which will obviously come in terms of l). ▪Using formula 3,we can get the value of potential gradient. Problem:My answer is coming 1Vm^-1 whereas the answer given is 0.01Vm^-1 IF THE ANSWER GIVEN SEEMS TO BE WRONG,KINDLY REPLY SO.