Solve the Problem $E$ Is Modeled By $E = 2.7 \cos 38 \pi t$

question 101

Multiple Choice

Solve the problem.
-For an electrical circuit, the voltage $E$ is modeled by $E = 2.7 \cos 38 \pi t$ , where $t$ is the time in seconds. How many cycles are completed in one second?

• A) 38 cycles
• B) \(38 \pi\) cycles
• C) 19 cycles
• D) \(2.7\) cycles

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