Which current delivered more charge, and how much more charge did it deliver? Current X is 2 point 5 cap A and runs for 39 seconds. Current Y is 3 point 8 cap A and runs for 24 seconds.
Answer
A
Y delivered 1 point 3 cap c more than X.
B
X delivered 97 point 5 cap c more than Y.
C
Y delivered 91 point 2 cap c more than X.
D
X delivered 6 point 3 cap c more than Y.
Explanation
Use the charge formula Q = I × t. Current X delivers 2.5 A × 39 s = 97.5 C, while current Y delivers 3.8 A × 24 s = 91.2 C. The difference is 97.5 C − 91.2 C = 6.3 C, so X delivered 6.3 C more than Y.
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