A sinusoidal voltage V(t) has an rms value of 100 V. Its maximum value is: 70.7 V 100 V 141 V 200 V 707 V
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What is the maximum value of an ac voltage whose rms value is 100 V?
A sinusoidal ac voltage source in a circuit produces a maximum voltage of 12.0 $\mathrm{V}$ and an rms current of 7.50 $\mathrm{mA}$ . Find (a) the voltage and current amplitudes and (b) the rms voltage of this source.
A sinusoidal, $60.0$ -Hz, ac voltage is read to be $120 \mathrm{~V}$ by an ordinary ac voltmeter. ( $a$ ) What is the maximum value the voltage takes on during a cycle? (b) What is the equation for the voltage? (a) $V=\frac{v_{0}}{\sqrt{2}} \quad$ or $\quad v_{0}=\sqrt{2} V=\sqrt{2}(120 \mathrm{~V})=170 \mathrm{~V}$ (b) $v=v_{0} \sin 2 \pi \mathrm{ft}=(170 \mathrm{~V}) \sin 120 \pi t$ where $t$ is in $\mathrm{s}$, and $u_{0}$ is the maximum voltage.
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