What did Oersted do in his experiment? (1) Placed a compass near an electromagnet and \( \mathrm...

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What did Oersted do in his experiment?
(1) Placed a compass near an electromagnet and
\( \mathrm{P} \)
observed its deflection
W
(2) Placed a compass near a magnet and observed the deflection of compass needle
(3) Placed a compass near a current carrying wire and observed the deflection of compass needle
(4) Placed a compass near an electrolyte and observed the deflection of compass needle
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