Question

Before substituting \[N=nl\], what is the total flux linkage through all \[N\] turns?

Options

• \[N\Phi_B=\mu_0nIA\]

• \[N\Phi_B=\frac{\mu_0nIA}{N}\]

• \[N\Phi_B=\mu_0n^2IA\]

• \[N\Phi_B=\mu_0nNIA\]

Answer 1

Each turn has flux \[\Phi_B=\mu_0nIA\]. Multiplication by the total number of turns gives \[N\Phi_B=\mu_0nNIA\].