Question

What is the rms current when \[V_{\mathrm{rms}}=220\,\mathrm{V}\] and \[X_L\approx7.85\,\Omega\]?

Options

• \[7.85\,\mathrm{A}\]

• \[0.0357\,\mathrm{A}\]

• \[220\,\mathrm{A}\]

• \[28.0\,\mathrm{A}\]

Answer 1

Apply \[I_{\mathrm{rms}}=\frac{V_{\mathrm{rms}}}{X_L}\]. Dividing \[220\] by \[7.85\] gives approximately \[28.0\,\mathrm{A}\].