An insulated wire is wound so that it forms a flat coil with N=200 turns. The radius of the innermost turn is \({r}_{1}\)=3 cm, and of the outermost turn \({r}_{2}=6cm\). If 20 mA current flows in it then the magentic moment will be \(\alpha \times {10}^{-2}A.{m}^{2}\). The value of \(\alpha\) is_____.

[04 April, 2026 (Shift-I)]

Question

An insulated wire is wound so that it forms a flat coil with N=200 turns. The radius of the innermost turn is \({r}_{1}\)=3 cm, and of the outermost turn \({r}_{2}=6cm\). If 20 mA current flows in it then the magentic moment will be \(\alpha \times {10}^{-2}A.{m}^{2}\). The value of \(\alpha\) is_____.

[04 April, 2026 (Shift-I)]

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