Question

The charge q flowing through a wire varies
with time t as q = (0.1 + 0.2t + 0.3t²)C where
t is in second. Find the current through the
wire initially and at t = 2s.

Answer 1

Explanation:

i=dq/dt

q=(0.1+0.2t+0.3t^2)C

dq/dt=0.2+0.6t

at t=2 sec

i=0.2+0.6(2)

i=1.4 Ampere