WBJEE · Physics · Electrostatics
The current flowing through a wire depends on time as \(I=3 t^2+2 t+5\). The charge flowing through the cross section of the wire in time from \(t=0\) to \(t=2 \mathrm{sec}\). is
- A \(22 \mathrm{C}\)
- B \(20 \mathrm{C}\)
- C \(18 \mathrm{C}\)
- D \(5 \mathrm{C}\)
Answer & Solution
Correct Answer
(A) \(22 \mathrm{C}\)
Step-by-step Solution
Detailed explanation
\(Q=\int_0^2\left(3 t^2+2 t+5\right) d t=22 C\)
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