SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A balloon is rubbed against a student’s hair and then touched to a wall. The balloon sticks to the wall due to
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The balloon is charged neutral, so is the wall, so it attracts to the wall
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The balloon is charged opposite the wall, so it attracts to the wall
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The balloon has a charge, so it attracts the neutral wall
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The wall grounds the balloon, so it sticks
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Explanation:
Detailed explanation-1: -Rubbing the balloon against hair causes electrons to move from the hair to the balloon. Because electrons are negatively charged, the balloon acquires a negative charge, while the hair, with its loss of negative charges, now has a net positive charge.
Detailed explanation-2: -An electrostatic force is responsible for the attraction between the ball and the wall. When we rub the balloon with a synthetic cloth, it gets charged and when the balloon is taken near the wall, it will get attracted to the uncharged wall because of the electrostatic force.
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