Solve the Problem $\mathrm { I } = 80 \sin 11 \pi \mathrm { t }$

question 161

Multiple Choice

Solve the problem.
-A generator produces an alternating current according to the equation $\mathrm { I } = 80 \sin 11 \pi \mathrm { t }$ , where $t$ is time in seconds and $I$ is the current in amperes. What is the smallest time $t$ such that $I = 40$ ?

• A) \(\frac { 1 } { 66 } \mathrm { sec }\)
• B) \(\frac { 1 } { 44 } \mathrm { sec }\)
• C) \(\frac { 1 } { 22 } \mathrm { sec }\)
• D) \(\frac { 1 } { 33 } \mathrm { sec }\)