Electromagnetic Induction - LR Circuit (Growing Current)


Here in above circuit we have inductor (L) ,resistor(R) and DC source(V). When we are going to close the switch S the current in the circuit will start increasing and due to this an EMF  will be induced in the inductor. This induced EMF will oppose the current i in the circuit. 





integrating both sides(Current rises from 0 to i and time from 0 to t)






Current time Graph for above equation is shown below.




 Visit PHYSICS page for more blogs

Popular posts from this blog

Electromagnetic Induction - Mutual Induction

Image
As we have variable source with increasing current in primary coil ,there will be a flux change in primary coil. Due to this flux change in primary coil there will be a flux change in secondary coil and this flux change in secondary coil will generate induced emf in secondary coil. This is called mutual induction. flux linked with secondary coil depends on current in primary coil ,so they are directly proportional to each other. differentiate with respect to time both sides   ------equation 1 As per faraday law induced emf in secondary coil is  ------equation 2 substitute value from equation 1 to equation 2   Visit PHYSICS page for more blogs
Read more