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For a uniform electric field and uniform current density both parallel to the length of a wire, if the electric field magnitude doubles, the current density doubles. O True O False 4

For a uniform electric field and uniform current density both parallel to the length of a wire, if the electric field magnitude doubles, the current density doubles. O True O False 4

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**Question:** For a uniform electric field and uniform current density both parallel to the length of a wire, if the electric field magnitude doubles, the current density doubles. - ○ True - ○ False **Explanation:** This statement is related to Ohm's Law, which states that the current density \( J \) is directly proportional to the electric field \( E \) in a conductor, with the relation given by \( J = \sigma E \), where \( \sigma \) is the conductivity of the material. Therefore, if the electric field magnitude doubles, the current density also doubles, assuming the material's conductivity remains constant.
Transcribed Image Text:**Question:** For a uniform electric field and uniform current density both parallel to the length of a wire, if the electric field magnitude doubles, the current density doubles. - ○ True - ○ False **Explanation:** This statement is related to Ohm's Law, which states that the current density \( J \) is directly proportional to the electric field \( E \) in a conductor, with the relation given by \( J = \sigma E \), where \( \sigma \) is the conductivity of the material. Therefore, if the electric field magnitude doubles, the current density also doubles, assuming the material's conductivity remains constant.
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