Question

The adjoining figure shows a negatively charged electroscope. If a positively charged rod touches the knob, the two leaves will

• A. move closer together
• B. move farther apart
• C. not move at all
• D. become positively charged

Answer 1

The correct option is A move closer together

Answer is A.
In this case, the given electroscope is negatively charged. If a positively charged rod is brought close to, but not touching, the knob, the two leaves will move closer to each other as the unlike charges attract each other.