GK
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
attracted to the balloon.
|
|
|
repelled from the balloon.
|
|
|
too bound to negative charges in the wall to have any effect.
|
|
|
neutralized.
|
Detailed explanation-1: -The excess electrons ( negative charges ) in the balloon will be slowly discharged through the wall ( since it is not a perfect insulator ) and as the balloon becomes neutral, it will fall.
Detailed explanation-2: -It is the attraction between the positively charged area of the wall and the negatively charged balloon that results in the balloon “sticking” to the board. Over time, electrons will transfer from the balloon to the wall, causing the balloon to become uncharged and fall to the floor.
Detailed explanation-3: -When you put it near a neutral object (paper, Styrofoam or puffed rice cereal), the electrons in the object repel away from the balloon and the protons are attracted to the balloon. This movement of the electrons causes the neutral object to get a low positive charge.
Detailed explanation-4: -The negatively charged balloon (from rubbing against hair) will repel the electrons of paper/water/aluminum cans away from the spot closest to the balloon, resulting in a positive charge on the paper/water/aluminum can. The negatively charged balloon then attracts the induced positive charge on the neutral material.