Question

(a) The amount of charge passed in time t through a cross-section of wire is q = alpha t - beta t^2 where alpha and beta are constant. (i) Find current in terms of time t. (ii) Sketch i versus t graph. (b) The current through a wire depends on time as i = 4 + 3t + 2t^2 Find the charge crossed through a section of wire in 6 sec.

Answer 1

Explanation:

alpha minus beta t is right answer of first