a current of 1.8 a delivers 2.5 c of charge. how much time was required?\no 0.70 s\no 0.72 s\no 1.4 s\no 4.5 s

Explanation:

Step1: Recall the current - charge - time formula

The formula for current $I$ is $I=\frac{Q}{t}$, where $I$ is current, $Q$ is charge, and $t$ is time. We need to solve for $t$. Rearranging the formula gives $t = \frac{Q}{I}$.

Step2: Substitute the given values

We are given that $I = 1.8\ A$ and $Q=2.5\ C$. Substituting these values into the formula $t=\frac{Q}{I}$, we get $t=\frac{2.5\ C}{1.8\ A}$.

Step3: Calculate the time

$t=\frac{2.5}{1.8}\ s\approx1.4\ s$

Answer:

1.4 s