Electro Magnetic Induction And Alternating Currents Question 575

Question: The inductance of a solenoid 0.5 m long of cross-sectional area 20 cm2 and with 500 turns is [AMU (Med.) 2000]

Options:

A) 12.5 mH

B) 1.25 mH

C) 15.0 mH

D) 0.12 mH

Show Answer

Answer:

Correct Answer: B

Solution:

L=μ0N2Al=4π×10−7×(500)2×20×10−40.5 =1.25mH

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