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Rowland (1876) placed some charges (in a...

Rowland `(1876)` placed some charges (in a fixed location) on a nonconducting disk, which he then rotated at high speed about its central axis near a delicate compass ( as shown in the following figure ). Rowland observed that :

A

There was no magnetic field, so nothing happened to the compass

B

The current created a magnetic field that deflected the compass

C

The charges repelled the compass by Coulomb's Law.

D

None of the above

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The correct Answer is:
B
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