Question

What is the phase angle in a pure resistive circuit?

Options

• \[\phi=-53.1^\circ\]

• \[\phi=90^\circ\]

• \[\phi=0\]

• \[\cos\phi=0\]

Answer 1

In a pure resistive circuit, voltage and current are in phase. Their phase angle is therefore zero, allowing maximum average power for given rms voltage and current.