“An electric current is always accompanied by a magnetic field” was discovered by

Kelvin

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Fleming

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Ampere

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Oersted

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Solution

The correct option is D
Oersted

Explanation of correct option
Oersted observed that when a compass is kept in the vicinity of a current-carrying conductor shows deflection which shows that the electric current goes hand in hand with the development of a magnetic field.
Thus, an electric current is always accompanied by a magnetic field was discovered by Oersted.
Hence, the correct option is (D).

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