Network Theory Network Elements Circuit Elements

A heater element is made of nichrome wire having resistivity equal to 100 × 10-8 Ωm. The diameter of the wire is 0.4 mm. The length of the wire required to get a resistance of 40 Ω and 1000 W is  

1
5.0 metres
2
4.5 metres
3
5.5 metres
4
4.0 metres

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