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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.
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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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