Exam Question

### Part (a): Phase Difference Between Voltage and Current
Phase difference (symbolized by the Greek letter phi, **φ**) in an Alternating Current (AC) circuit describes the time or angular separation between the voltage and current sinusoidal waveforms. As both quantities vary sinusoidally over time, they may not necessarily reach their maximum or zero values simultaneously. This offset is the phase difference.
**1. Definition and Measurement:**
- **Angular Separation:** Phase difference is the angle by which the current waveform leads (is ahead of) or lags (is behind) the voltage waveform.