- #1
ah4p
- 21
- 0
I'm studying for my prelim and am trying to understand inductance better based on some questions I have done I've come up with these statements can anyone confirm they are true
the back emf in an inductive circuit at any given time equal to the voltage across the inductor
I initially thought you had to subtract the voltage across the inductor from the supply voltage to find back emfthe more turns in the coil of wire the greater the back emf and the smaller the maximum current
there was a question on how the increasing the number of turns will affect the time taken to reach the maximum current
My guess is that the increased number of turns will increase the induced back emf thus there is more resistance to current so it will take longer to reach its maximum
since back emf = -L dI/dt
also
if you remove the core from an inductor there will be no effect on maximum current but the inductance and back emf are both reduced so the time to reach max. current is smaller
thanks for any help :)
the back emf in an inductive circuit at any given time equal to the voltage across the inductor
I initially thought you had to subtract the voltage across the inductor from the supply voltage to find back emfthe more turns in the coil of wire the greater the back emf and the smaller the maximum current
there was a question on how the increasing the number of turns will affect the time taken to reach the maximum current
My guess is that the increased number of turns will increase the induced back emf thus there is more resistance to current so it will take longer to reach its maximum
since back emf = -L dI/dt
also
if you remove the core from an inductor there will be no effect on maximum current but the inductance and back emf are both reduced so the time to reach max. current is smaller
thanks for any help :)