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In Thomson experiment, why was the glowing beam repelled by a negatively charged plate

User Godda
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Answer:

Because the beam contained negatively charged particles

User FireSarge
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In Thomson experiment, why was the glowing beam repelled by a negatively charged plate, because the glowing beam was negatively charged. The glowing beam particles were attracted to the positive plate.

J.JThomson proved that the cathode rays produced a stream of negatively charged particles called electrons.
User Antonin
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