The current I (in amperes)when 100 volts is applied to a circuit is given by $I = 5 e ^ { - 2 t } \sin t$ where t is the time (in seconds)after the voltage is applied.Approximate the current at
T = 0.8 second after the voltage is applied.(Round your answers to two decimal places. )

A)1.12 ampere
B)1.02 ampere
C)0.72 ampere
D)0.82 ampere
E)0.92 ampere

Question

The current I (in amperes)when 100 volts is applied to a circuit is given by​ $I = 5 e ^ { - 2 t } \sin t$ ​ where t is the time (in seconds)after the voltage is applied.Approximate the current at
T = 0.8 second after the voltage is applied.(Round your answers to two decimal places. )
​
A)1.12 ampere
B)1.02 ampere
C)0.72 ampere
D)0.82 ampere
E)0.92 ampere

Quizplus · Accepted Answer

To find the current at $t = 0.8$ seconds, substitute $t = 0.8$ into the given equation: $I = 5e^{-2(0.8)}\sin(0.8)$. Calculating this gives approximately $0.72$ amperes.

The Current I (In Amperes)when 100 Volts Is Applied to a Circuit