Question

If i1 = e^(-2t) and i2 = 0, the voltage v1 is

(a) -6e^(-2t) V

(b) 6e^(-2t) V

(c) 1.5e^(-2t) V

(d) -1.5e^(-2t) V

The question was asked during a job interview.

I'd like to ask this question from Magneticaly coupled circuits in chapter EDC Overview of Electronic Devices & Circuits

Answer 1

The correct answer is (c) 1.5e^(-2t) V

Easiest explanation: v1 = 4 d(i1)/dt – 3 d(i2)/dt.