Question

A closed cure encircles several conductors. The line integral `intB.dI` around this curve is `3.83xx10^-7T-m`
a. What is the net current in the conductors?
b. If you were to integrate aroundthe curve in the opposite direction, what would be the value of the line integral?

Answer 1

a. `intB.dI=mu_0i_(net)`
`:. i_(net)=(intB.dI)/mu_0=(3.83xx10^-7)/(4pixx10^-7)=0.3A`
b. In opposite direction, line integral will be negative.