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A copper conductor is in the shape of a ...

A copper conductor is in the shape of a cylindrical shell of length 20 cm and inner and outer diameter 1 cm and 3 cm. A potential difference 200 V is applied between the flat surfaces of the conductor. The current density in it is `10A//m^2` . The value of x is ________

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To solve the problem, we need to find the value of \( x \) in the expression for current density \( J = 10^x \) given the parameters of the cylindrical shell conductor. ### Step-by-Step Solution: 1. **Identify the Given Values**: - Length of the cylindrical shell, \( L = 20 \, \text{cm} = 0.2 \, \text{m} \) - Inner diameter, \( d_1 = 1 \, \text{cm} = 0.01 \, \text{m} \) - Outer diameter, \( d_2 = 3 \, \text{cm} = 0.03 \, \text{m} \) ...
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