Question

A current of 1.8 A delivers 2.5 C of charge. How much time was required?

A.0.70 S
B.0.72 S
C.1.4 S
D..5 S

Answer 1

Answer: C

Step-by-step explanation:

Answer 2

The current is defined as the amount of charge that flows through a given point in a certain time interval:

`I= (Q)/(\Delta t)`
where Q is the charge and
`\Delta t` the time interval.

In our problem, I=1.8 A and Q=2.5 C, therefore we can find the time interval by re-arranging the previous formula and plugging these numbers into it:

`\Delta t= (Q)/(I)= (2.5 C)/(1.8 A)=1.4 s`

Therefore, C) is the correct answer.