# Alternating quantities

### Explanation of question 6

In Fig. 7.1

1. v1 and v2 are in phase
2. v2 leads v1
3. v1 lags v2
4. v2 lags v1

The answer is :- 4 Referring to the time axis of the graph, you can see that the V1 waveform arrives at a given value before the V2 waveform. V1 is said to LEAD V2 or V2 is said to LAG V1

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