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

question 256

Multiple Choice

Solve the problem.
-The voltage $\mathrm { E }$ in an electrical circuit is given by $\mathrm { E } = 3.1 \cos 140 \pi \mathrm { t }$ , where $t$ is time measured in seconds. Find the amplitude.

• A) \(3.1\)
• B) 140
• C) \(6.2\)
• D) \(140 \pi\)

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