At one time it was thought that electric charge was a weightless fluid. An exces

Question

At one time it was thought that electric charge was a weightless fluid. An excess of this fluid resulted in a positive charge; a deficiency resulted in a negative charge. Describe at least one experiment for which this hypothesis provides a satisfactory explanation. Check all that apply. A positively charged metal ball A is placed near an uncharged metal ball B, the ball A and the ball B attract. A positively charged metal ball A is placed near an uncharged dielectric ball B, the ball A and the ball B attract. If you rub a balloon with a wool scarf, the balloon and the scarf attract. Two balloons rubbed by a wool scarf repel - they have a like charge.

Explanation / Answer

I think rubbing experiments gives satisfactory explanation

when rubbed, fluid slows from 1 to other and they attract

when 2 ballon are rubbed, they both aquire excess fluid and they repel

Answer:
option 3
option 4

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