Kelvi

A copper wire of length $10$ m and radius $\left( \frac{10}{\pi} \right)$ mm has electrical resistance of $10 \Omega.$ The current density in the wire for an electric field strength of $10$ V/m is:

hard

Current Electricity

2022

physics

$10^4$ A/m $^2$

$10^6$ A/m $^2$

Explanation

To solve this problem, we need to find the current density in the wire. $\\$ Given: $\\$ • Length of the wire $L = 10$ m $\\$ • Radius of the wire $r = \frac{10}{\pi}$

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A copper wire of length 10 10 10 m and radius (10π) \left( \frac{10}{\pi} \right) (π10​) mm has electrical resistance of 10Ω. 10 \Omega. 10Ω. The current density in the wire for an electric field strength of 10 10 10 V/m is:

Explanation

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A copper wire of length $10$ m and radius $\left( \frac{10}{\pi} \right)$ mm has electrical resistance of $10 \Omega.$ The current density in the wire for an electric field strength of $10$ V/m is: