Recent content by Kashim

Ok thanks a lot guys :) Edit: Sorry 1 more. Are harmonic frequencies (multiples of the fundamental) the same thing as resonant frequencies?

Hi I had a quick question. From what I understand resonance is when a natural frequency of an object is matched by the driver frequency however in this graph it seems as though resonance is occurring at all the frequencies around the natural frequency just not to a great extent...

Ahhh that makes sense now thank you. Just one final thing to make sure I've understood it; you're saying that the motor initially starts as a motor, but when it begins to move it starts to act as a generator, thus creating a new emf which counters the original one, right? If it's possible you...

Thanks for both of your replies. Yes eddy currents make a lot more sense now, especially if I think of the iron as a conducting material. In relation to my previous post though, do eddy currents have anything to do with Lenz's law, I take it that they are effectively the 'induced emf', does...

Hi, I am about to sit my Physics A-level paper next week and I have a couple of questions. My first question is rather broad, but what are eddy currents? I understand they're formed in transformers and how their effect is reduced, but I don't understand exactly why they're caused. Am I right...