Question:
The amount of charge passed in time $t$ through a cross-section of a wire is $Q(t)=A t^{2}+B t+C .$
(a) Write the dimensional formulae for A, B and C.
(b) If the numerical value of $A, B$ and $C$ are 5,3 and 1 respectively in SI units, find the value of current at $t=5 s$.
Solution:
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