In a uniform straight wire, conduction electrons move along +x direction. Let E and j be…
Physics · Class 12 · CBSE — Current Electricity
In a uniform straight wire, conduction electrons move along +x direction. Let \(\vec{E}\) and \(\vec{j}\) be the electric field and current density in the wire, respectively. Then:
- \(\vec{E}\) and \(\vec{j}\) both are along \(+x\) direction.
- \(\vec{E}\) and \(\vec{j}\) both are along \(-x\) direction.
- \(\vec{E}\) is along \(+x\) direction, but \(\vec{j}\) is along \(-x\) direction.
- \(\vec{E}\) is along \(-x\) direction, but \(\vec{j}\) is along \(+x\) direction.
Answer
(D) E is along -x direction, but j is along +x direction.
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