Question

If charge q = 3t^2 + 2 then current is given by

(a) 6t + 2

(b) 3t^2

(c) 6t

(d) 3t^2 + 2

The question was posed to me by my college professor while I was bunking the class.

This intriguing question originated from The International System of Units, Voltage and Current, Power and Energy topic in section Circuit Variables and Elements of Electric Circuits

Answer 1

Right option is (c) 6t

The explanation: I = dq/dt  = d/dt(3t^2 + 2) = 6t.