railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Magnetostatics

Calculate the inductance of an air core solenoid of length 400 cm, area of cross-section \(\rm \left(\frac{2}{\pi}\right)m^2\) and having 200 turns.

1
8 mH
2
10 H
3
8 H
4
0.08 H
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