Solve the Problem $\mathrm { E }$ In an Electrical Circuit Is Given By

question 8

Multiple Choice

Solve the problem.
-The voltage $\mathrm { E }$ in an electrical circuit is given by $\mathrm { E } = 3.3 \cos 130 \pi \mathrm { t }$ , where $t$ is time measured i seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second) .

• A) 65
• B) \(\frac { 1 } { 130 }\)
• C) 130
• D) \(\frac { 1 } { 65 }\)

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