A balloon is rubbed on a woollen sweater and is placed on the surface of a wall.
a) What is the charge on the balloon?
b) What is the induced charge on the wall surface?
c) What happens at the surface of the wall when the charged balloon induces a charge?
d) What force holds the balloon to the wall?
Answers
Answer:
a) Negative charge
b)Wool is a conductive material, which means it readily gives away its electrons. Consequently, when you rub a balloon on wool, this causes the electrons to move from the wool to the balloon's surface. The rubbed part of the balloon now has a negative charge.
c)Bringing the negatively charged balloon near to the wall causes the electrons in the balloon to repel the electrons in the wall from the balloon. This is known as an induced charge separation. Induced charge separation leaves a positive charge on the surface of the wall closest to the balloon.
b) Static force holds the balloon to the wall
Explanation:
A)When rubbing a balloon with a wool cloth, it puts negative charges on the balloon
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