Length of torus loops?

What is the length of torus loops in the function of number of turns (n)?
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n=5;​​tor=ParametricPlot3D[{(2+Cos[v])Cos[u],(2+Cos[v])Sin[u],Sin[v]},{u,0,1.9Pi},{v,0,2Pi},MeshNone,BoundaryStyleBlack,PlotStyleFaceForm[Yellow,Red]][[1]];​​loop=ParametricPlot3D[{(2+Cos[nu])Cos[u],(2+Cos[nu])Sin[u],Sin[nu]},{u,0,2Pi},PlotStyleTube[0.07]][[1]];​​Graphics3D[{tor,loop},BoxedFalse,SphericalRegionTrue,ImageSize200]
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n=10;​​tor=ParametricPlot3D[{(2+Cos[v])Cos[u],(2+Cos[v])Sin[u],Sin[v]},{u,0,1.9Pi},{v,0,2Pi},MeshNone,BoundaryStyleBlack,PlotStyleFaceForm[Yellow,Red]][[1]];​​loop=ParametricPlot3D[{(2+Cos[nu])Cos[u],(2+Cos[nu])Sin[u],Sin[nu]},{u,0,2Pi},PlotStyleTube[0.07]][[1]];​​Graphics3D[{tor,loop},BoxedFalse,SphericalRegionTrue,ImageSize200]
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