Revision for electrostatic

Why does a shirt or blouse taken from a clothes dryer sometimes cling to your body?

• Motion of dryer causes friction that charges clothing

• The clothes are dirty

• Nothing happen to the clothes

• The clothes and the body have the same charges

Staying in a close car is safe during lightning and thunder storm because..

• Electric charge can travel inside the car and we can get a shock

• The car is made from non metal

• Electric charge stay on the outer surface of the car

• The car is insulator

What variable do "Newtons" represent?

• Electrostatic Charge

• Force

• Distance

• Mass

Two oppositely charged particles are held in place near each other. When the particles are released, what will most likely happen?

• the will accelerate towards each other

• they will accelerate away from each other

What is the force between two 1.5 x 10^-8 C charges separated by 3.4 m?

• 1.8 x 10^-7 N

• 1.2 x 10^-1 N

• 8.0 x 10^-7 N

The Electric Force is strongest when charges are...

• close together

• the electric force is constant everywhere

• far apart

The direction of force on a charge in electric field is always along the direction of electric field.

• True

• False

In the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?

• Right

• Left

• Up

• Down

Which of the following is a true statement about the electric field between the two plates?

• The field is attractive between the plates and uniform in strength

• The field is repulsive between the plates and uniform in strength

• The field is attractive between the plates and strongest near the positive

• The field is repulsive between the plates and strongest near the positive