Two metal balls are suspended as shown in the figure. A glass rod is rubbed with silk to make it charged. Now, both the balls are individually touched with this glass rod. What would we observe?

The balls attract each other.

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The balls repel each other.

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Neither attraction nor repulsion

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The balls will heat up.

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Solution

The correct option is B The balls repel each other.
When the glass rod is rubbed with silk, it becomes charged. Now, when both the metal balls touch the glass rod, both acquire the same kind of charge as that of the glass rod. As we know that like charges repel each other, the two balls would repel each other.

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