CAIE A-Level Physics A2 21.1.1 The Terms Period Frequency and Peak Value As Applied to an Alternating

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The output of a power supply is represented by:

V=9.0 \sin 20 t

where V is the potential difference in volts and t is the time in seconds.
Determine, for the output of the supply:

the period T.

$\begin{aligned} \omega=20 \omega=2 \pi / T T=2 \pi / 20 \end{aligned}$ $T=0.31 \mathrm{~s}$

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CAIE A-Level Physics A2 21.1.1 The Terms Period Frequency and Peak Value As Applied to an Alternating Topic Practice