Question on: JAMB Physics - 1991
An insulated rod when rubbed with a material acquires
A
a negative charge if it is made of glass and rubbed with silk
B
no charge if it is made of glass and rubbed with fur
C
no charge if it is made of copper and rubbed with silk
D
a positive charge if it is made of copper and rubbed with fur
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Correct Option: B
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