The discussion revolves around the behavior of a coil of wire as the current flowing through it is increased, specifically focusing on inductance and electromotive force (emf). The subject area includes concepts from electromagnetism and circuit theory.
Some participants have provided insights suggesting that inductance is a physical quantity not affected by current for certain types of inductors, while others are exploring how changes in current might influence magnetic flux and its relationship to inductance. Multiple interpretations regarding the effects of core materials on inductance are being considered.
Participants are discussing the properties of inductors, including air core versus ferrite or iron core inductors, and the implications of these properties on inductance and magnetic flux. There is an ongoing examination of the assumptions underlying the equations presented.
Your answer looks correct to me. The EMF is constant since the increase in I is linear. The inductance is a physical quantity, not affected by current (for an air core inductor). If the inductor had a ferrite or iron core, would that change your answer?alexdr5398 said:
If the current increases, would anything else on the right side of the above equation change?alexdr5398 said:
berkeman said:Your answer looks correct to me. The EMF is constant since the increase in I is linear. The inductance is a physical quantity, not affected by current (for an air core inductor). If the inductor had a ferrite or iron core, would that change your answer?
TSny said:
Yes. If the current doubles, then the flux doubles. So, the formula would leave L unchanged.alexdr5398 said:
Yes. The inductance is determined by the physical properties of the inductor (size, shape, number of wraps, type of core, etc.) as berkeman pointed out.