In the diagram shown, a wire carriers current `I`. The loop has `N` turns and part of helical loop
Channel: Doubtnut
Date: 2020-01-19

In the diagram shown, a wire carriers current `I`. The loop has `N` turns and part of helical loop on which arrows are drawn is outside the plane of paper. What is the value of the `oint vecB.vec(dl)` (as in Ampere\'s law) on the helical loop shown in the figure?