Question

The current in a certain circuit varies with time, as shown in the figure. Find the average current from $t=0$ to $t=2\text{s}$.

• A. $2.5\text{A}$
• B. $3.5\text{A}$
• C. $4.5\text{A}$
• D. $5.5\text{A}$

Answer 1

The correct option is A $2.5\text{A}$


The average current from $t=0$ to $t=2\text{s}$,

$i_{avg}=\frac{\text{Area under}i-t\text{curve}}{\text{Total time}}$

$\Rightarrow i_{avg}=\frac{\frac{1}{2}\times 2\times 5}{2}=2.5\text{A}$