Correct Answer - Option 3 : 10
-3 kHz
Concept:
- Frequency is the rate at which current changes direction per second.
- It is measured in hertz (Hz), an international unit of measure where 1 hertz is equal to 1 cycle per second
Calculation:
Time period = 1000 ms
Frequency = \(\frac{1}{Time \; period}\)
Frequency = \(\frac{1}{1000\;ms}\)
Frequency = \(\frac{1}{1000\;\times 10^{-3}\;s}\)
Frequency = \({10^{-3}\;\times 10^{3}\;s^{-1}}\)
Frequency = 10-3 kilohertz
