Answer:
3 A
Explanation:
Charge is a product of current and time, expressed as Q=It where Q is charge in Coulombs, I is current in Amperes and t is time taken in seconds. Making I the subject of the formula then [tex]I=\frac {Q}{t}[/tex]
Substituting 120 C for charge and 40 s for t then[tex]I=\frac {120}{40}=3\ A[/tex]
From the choices given, it appears that time should have been 4 s to get option A or alternatively charge should have been 1200 C
