The emf phasor in $($Figure $1)$ is shown at $\backslash ($ t$=16\backslash$mathrm$\{$~ms$\}\backslash ).$ Assume $\backslash (\backslash$mathcal$\{$E$\}\_\{0\}=20\backslash$mathrm$\{$~V$\}\backslash ).$

Figure

$1$ of $1$

Hint $1.$ How to approach the problem

Recall how the phase angle of a phasor is measured. Determine the definition of angular frequency knowing how the phase angle changes in a given time period.

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Check the direction of the axis from which you measure the phase angle.

Part B

What is the instantaneous value of the emf?

Express your answer with the appropriate units.

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Correct

Correct answer is shown. Your answer $-17\mathrm{.}3$ V was either rounded differently or used a different number of significant figures than required for this part.