U9 Videos FP 13.1.1

What is the magnitude of the elementary charge, and what is its SI unit?

• 1.60 x 10^-19 Joules, J

• 9.11 x 10^-31 kilograms, kg

• 1.60 x 10^-19 Coulombs, C

• 1.67 x 10^-27 Newtons, N

When a rubber balloon is rubbed against hair, why does the balloon then stick to the hair?

• Electrons transfer from the balloon to the hair, making both negatively charged and attracting them.

• Electrons transfer from the hair to the balloon, making the balloon negatively charged and the hair positively charged, leading to attraction.

• Protons transfer from the hair to the balloon, making the balloon positively charged and the hair negatively charged, leading to attraction.

• The rubbing creates a magnetic field that pulls the balloon and hair together.