Single Choice

If a copper rod carries a direct current, the magnetic field associated with the current will be

AOnly inside the rod
BOnly outside the rod
CBoth inside and outside the rod
Correct Answer
DNeither inside nor outside the rod

Solution

For solid rod ,there will be current flowing inside the rod , so there will be magnetic field (Ampere circuital law). There will magnetic field outside the rod and it will decrease as we increase the distance .

SIMILAR QUESTIONS

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