If the frequency of an AC signal is doubled, what happens to its period?

Practice Questions

Q1
If the frequency of an AC signal is doubled, what happens to its period?
  1. It doubles
  2. It halves
  3. It remains the same
  4. It quadruples

Questions & Step-by-Step Solutions

If the frequency of an AC signal is doubled, what happens to its period?
  • Step 1: Understand that frequency (f) is how many times something happens in one second.
  • Step 2: Know that the period (T) is the time it takes for one complete cycle of the signal.
  • Step 3: Remember the formula that relates period and frequency: T = 1/f.
  • Step 4: If the frequency is doubled, it means f becomes 2f.
  • Step 5: Substitute 2f into the formula: T = 1/(2f).
  • Step 6: Compare the new period (T = 1/(2f)) with the original period (T = 1/f).
  • Step 7: Notice that 1/(2f) is half of 1/f, so the new period is half the original period.
  • Frequency and Period Relationship – The relationship between frequency and period is defined by the formula T = 1/f, where T is the period and f is the frequency.
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