electricity jeopardy is static all you got? electric fields i’m coulomb like that multiple choice...
TRANSCRIPT
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Electricity Jeopardy
Is static all you got? Electric Fields
I’m Coulomb Like That
Multiple Choice
Q $100
Q $200
Q $300
Q $400
Q $500
Q $100 Q $100Q $100
Q $200 Q $200 Q $200
Q $300 Q $300 Q $300
Q $400 Q $400 Q $400
Q $500 Q $500 Q $500
Final Jeopardy
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$100 Is static all you got?
What are the 3 ways to charge an object?
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$100 Answer Is static all you got?
FrictionInductionConduction
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$200 Is static all you got?
Are electrons free to move around in an insulator or a conductor?
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$200 Answer Is static all you got?
Conductors
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$300 Is static all you got?
When charges separate themselves due to charging by induction, this is called what?
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$300 Answer Is static all you got?
Polarization.
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$400 Is static all you got?A person walking across a carpet touches another person and shocks them. This is an example of what?
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$400 Answer Is static all you got?
Conduction
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$500 Is static all you got?
What type of charging is occurring when a balloon sticks to a wall? What is actually happening between the balloon and the wall?
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$500 Answer Is static all you got?
Induction.
The negatively charged balloon will not transfer charge since it is an insulator, instead, it induces an electric dipole in the wall with the positive charges closer to the outside and the negatives pushed further away from the balloon.
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$100 Question Electric Fields
What occurs around charged objects and how do we represent it?
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$100 Answer Electric Fields
Electric field and we represent it with vectors.
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$200 Question Electric Fields
What direction does electricity flow?
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$200 Answer Electric Fields
Positive to negative
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$300 Question Electric Fields
Draw the electric field lines between a positive and a negative charge.
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$300 Answer Electric Fields
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$400 Question Electric Fields
Draw a diagram of the electric field lines between two similar positive charges.
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$400 Answer Electric Fields
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$500 Question Electric Fields
Why are you safe in a lightening stormIf you are sitting in your car?
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$500 Answer Electric Fields
All of the charge gathers on the outside of the car keeping you safe.
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$100 Question I’m Coulomb like that
Which tends to be a stronger force, gravitational force or electrostatic force?
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$100 Answer I'm Coulomb like that
Electrostatic Force
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$200 Question I'm Coulomb like that
If you have two charged objects near each other and you double the charge of one of them what happens to the electrostatic force?
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$200 Answer I'm Coulomb like that
It doubles.
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$300 Question I'm Coulomb like that
If you have two charged objects near each other and you double the charge of both of them what happens to the electrostatic force?
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$300 Answer I'm Coulomb like that
It quadruples
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$400 Question I'm Coulomb like that
If you have two charged objects near each other and you double the distance between them what happens to the electrostatic force?
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$400 Answer I'm Coulomb like that
It goes down by a factor of 4.
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$500 Question I'm Coulomb like that
What will the force between two charges be if they start off with a force of 15 N, but you double one of the charges and you double the distance?
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$500 Answer I'm Coulomb like that
7.5 N
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$100 Question Multiple Choice
Which of the following is least likely toresult in the generation of static charge? A. peeling plastic wrap off a CD case B. combing dry hair with a plastic comb C. rubbing one's shoes on a synthetic
carpet D. drying one's body with a towel after
a shower
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$100 Answer Multiple Choice
D. drying one's body with a towel aftera shower
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$200 Question Multiple Choice
Why does a plastic rod have a negative charge after being rubbed with a piece of fur? A. The fur gives up protons to the rod. B. The rod gains electrons from the fur. C. The fur gains protons from the rod. D. The rod gives up electrons to the air.
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$200 Answer Multiple Choice
B. The rod gains electrons from the fur.
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$300 Question Multiple Choice
A negatively charged rubber rod was brought near some small pieces of paper. The rod’s charges repelled the negative charges in the pieces. Which of the following caused the repulsion of the negative charges?
A. conduction B. gravitation C. induction D. insulation
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$300 Answer Multiple Choice
C. induction
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$400 Question Multiple ChoiceWhich of the following describes an object that must have a net negative charge?
A. It contains more molecules than atoms.
B. It contains more electrons than protons.
C. It is carrying an electric current.
D. It is made of metal.
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$400 Answer Multiple Choice
B. It contains more electrons than protons.
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$500 Question Multiple ChoiceAn electrostatic paint sprayer is used to spray paint evenly onto the surface of a car. Before the paint is sprayed, the car body is given a positive charge and the paint droplets are given a negative charge. The paint droplets experience an attractive force as soon as they are released from the sprayer. The paint droplets are originally sprayed at a distance of 30 cm from the car body, as shown below.painting a car with electrostatic paint sprayerWhich of the following changes will cause the largest increase in the attractive force on the paint droplets?
A. The charge on the car body is doubled. B. The charge on the paint droplets is doubled. C. The distance between the paint droplets and the car body
is halved. D. The distance between the paint droplets and the car body
is doubled.
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$500 Answer Multiple Choice
C. The distance between the paint droplets and the car body is halved.
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$100 Question Extra
Why will your hair stand up when you hold onto the Van de Graff generator.
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$100 Answer Extra
Electrons build up even in your hair and the electrons repel each other.
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$200 Question ExtraWhat type of charging causes the plastic on a CD to stick to you when you first unwrap the CD?
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$200 Answer Extra
Friction
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$300 Question Extra
A positive Ion ____________ electrons.
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$300 Answer Extra
Loses
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$400 Question Extra
Why shouldn’t you get in and out of your car when you pump gas?
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$400 Answer Extra
You can charge yourself by friction when you slide in and out and then arc to the gas when you go to take the pump out of the tank. FIRE!
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$500 Question ExtraWhy doesn’t it hurt you to have static charge built up on you? What actually hurts you when you get electrocuted?
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$500 Answer Extra
Current is what hurts you
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Final Jeopardy
Why shouldn’t you get in and out of your car when you pump gas?
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Final Jeopardy Answer
You can charge yourself by friction when you slide in and out and then arc to the gas when you go to take the pump out of the tank. FIRE!