In detail, can someone describe to the the induction theory as it applies to electrical circuits??

Question

I am studying electronics and I have been having a very difficult time understanding the concept of induction and the relationship between voltage and current as it applies to induction. can someone help me??

Answer 1

When you apply voltage (in a closed loop) to an inductor, current will flow. The higher the voltage, the higher the current. The current will not really "flow" fully until a complete magnetic field builds up in the inductance. Once this happens, the inductor will have it's highest magnetic field around it. When voltage is removed, the magnetic field will collapse to maintain the current flow through the inductor. Even though voltage is no longer applied to the inductor current will try to flow while the field collapses. Once the field collapses, current will drop to nothing. The cool thing is that if the path for current is removed, the voltage will go VERY high to try to maintain the current no matter what. You can get many times the voltage from an inductor just by removing the voltage source and path for current flow.