A negatively charged object is brought near the knob of a negatively charged electroscope. The leaves of the electroscope will ...

A) become positively charged

B) move closer together

C) become neutral

D) move farther apart

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Positive charge Q is placed on a conducting spherical shell with inner radius R1 and outer radius R2. A particle with charge q is placed at the center of the cavity. The net charge on the inner surface of the conducting shell is

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A negatively charged object is brought near the knob of a negatively charged electroscope. The leaves of the electroscope will ... A) become positively charged B) move closer together C) become neutral D) move farther apart