An ideal inductor (zero winding resistance) of self-inductance has terminals labelled…

PHYSICS · Subjective · Fermi University Physics · Electricity, Magnetism & Electromagnetism · Electromagnetic induction and alternating-current circuits · Electromagnetic induction and alternating-current circuits

Electricity, Magnetism and Electromagnetism, Ch Self and mutual inductance and magnetic field energy

Problem

An ideal inductor (zero winding resistance) of self-inductance

L = 0.15\,\mathrm{H}

has terminals labelled A and B. The current in it flows into terminal A and out of terminal B, and it is increasing steadily at

0.40\,\mathrm{A\,s^{-1}}

. Which statement about the potential difference between the terminals is correct? (a) A is at the higher potential, by

60\,\mathrm{mV}

. (b) B is at the higher potential, by

60\,\mathrm{mV}

. (c) A is at the higher potential, by

0.38\,\mathrm{V}

. (d) There is no potential difference, because an ideal inductor has no resistance.

Browse the problem library