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A wire having length 2.0 m diameter 1.0 ...

A wire having length 2.0 m diameter 1.0 mm and resistivity `1.963 xx 10^(-8) Ω` m is connected in series with a battery of emf 3V and internal resistance I`Ω`. Calculate the resistance of the wire and current in the circuit.

Text Solution

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Given l =2m D =1.0 mm `rho = 1.963 xx10^(-8) omega m epsilon =3v r = 1 omega R= ? I=?`
`R=(rho l)/(A)`
`R=5xx10^(-2) omega`
`I=2.85 A`
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