Question

If i1 = 4 cos(3t) and and i1 = 0. Find v2.

(a) 12 cos(3t) V

(b) -12 cos(3t) V

(c) -24 cos(3t) V

(d) 24 cos(3t) V

This question was addressed to me in an internship interview.

The doubt is from Magneticaly coupled circuits topic in chapter EDC Overview of Electronic Devices & Circuits

Answer 1

Right option is (c) -24 cos(3t) V

For explanation I would say: v1 = 2 d(i1)/dt – 2 d(i2)/dt.