How does the magnetic field produced around a straight current-carrying conductor change as : a) current in the conductor is increased? b) the distance from the conductor is increased? c) the direction of flow of current changes?
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Answer:
On increasing the current through the conductor the strength of magnetic field will increase.
Explanation:
The strength of the magnetic field at a distance r from a current carrying conductor is given by the relation: B = (μo/2π)I/r. So increasing the current will increase the magnetic field strength.
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