Neco 2017 Physics Question 33
Practice objective / multiple choice question 33 from the 2017 Neco Physics examination.
A solenoid 0.50\,m long has 800 turns and carries a steady current of 2.0\,A. Its core is a cylindrical iron rod of radius 2.0\,cm and relative permeability \(\mu_{r}=500\) that fits snugly inside the solenoid. (a) Calculate the magnetic flux through the solenoid when the core is fully inserted. (b) The core is then withdrawn uniformly over a time interval of 0.20\,s. Determine the average induced emf in the solenoid during this withdrawal.
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About This Question
This is Neco 2017 Physics Question 33. It is one of the objective questions from the 2017 Neco Physics examination.
Difficulty level: Hard .
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