Question

Which formula gives the rms current through a pure inductor?

Options

• \[I_{\mathrm{rms}}=\frac{X_L}{V_{\mathrm{rms}}}\]

• \[I_{\mathrm{rms}}=\frac{V_{\mathrm{rms}}}{L}\]

• \[I_{\mathrm{rms}}=V_{\mathrm{rms}}X_L\]

• \[I_{\mathrm{rms}}=\frac{V_{\mathrm{rms}}}{X_L}\]

Answer 1

The rms current is the rms voltage divided by inductive reactance. Thus, \[I_{\mathrm{rms}}=\frac{V_{\mathrm{rms}}}{X_L}\].