In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will
A. increase
B. decrease
C. remain the same
D. initially increase and then decrease
Answer:B
In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will
A. increase B. decrease C. remain the same D. initially increase and then decrease
Explanation: If the core were removed, the magnetic flux within the coils will diminish causing a loss of e.m.f. according to Faradays laws.