Multiple choice

A child rubs a rubber ruler and then puts it near some tiny pieces of paper. The paper pieces are then attracted to the ruler. Which of the following statements best explains the result?

  1. Paper is naturally a negative material.

  2. Rubber and paper always attract each other.

  3. The paper becomes charged by induction.

  4. The paper acquires a net positive charge by induction.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

By rubbing the rubber ruler, it acquires the negative charge. When it comes in contact with tiny piece of paper (having no charge), it induces the opposite positive charge.

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