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An iron core solenoid has self-inductance 2.8 H. When the core is removed, the self-inductance becomes 2 mH. What is the relative permeability of the core used ? |
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Answer» Solution :Relative PERMEABILITY of iron core `mu_(r) = ("Self-inductance of SOLENOID with iron core")/("Self-inductance of solenoid without iron core")` `(2.8 H)/(2mH) = (2.8H)/(2 xx 10^(-3)H)=1400` |
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