Electrostatics
Electric Fields and Potential
Electric Current
Double Bonus Grab Bag
100
These negatively charged particles orbit around the nucleus of an atom.
What are electrons.
100
Electric fields lines point (out/in) from negative charges and (out/in) from positive charges.
In to negative, out from positive.
100
This is the definition of electric current.
What is the flow of electric charge from one place to another.
100
Where do the electrons in an electric circuit come from?
From the surface of the metal itself.
200
Like Newton's gravity equation, Coulomb's Law follows a common mathematical pattern and is an example of this kind of equation.
What is an inverse square law.
200
This is the term used for the energy per charge a location has due to it's location in an electric field.
What is electric potential.
200
This is the phenomenon which causes charges to flow along a conductor.
What is potential difference.
200
In order to make the Van de Graaf generator safe after using it, you need to give the electrons a path to _____.
What is ground.
300

An object that gains a charge due to the action of an electric field far away from it is said to have undergone:

Induction

300
This is the effect that shields an object inside a conducting shell from external electric fields.
What is the skin effect.
300
This is the name for electric current in which the electrons vibrate back and forth along the wire rather than travelling in one direction.
What is Alternating Current.
300
Direct current is mostly produced by ________. Alternating Current is mostly produced by _________.
What are batteries and generators.
400
Insulators make it difficult for electricity to flow because they have this property.
What are bound electrons?
400
This device uses two metal plates to store energy using a trapped electric field.
What is a capacitor?
400
This is a typical drift velocity for electrons in a circuit.
What is around 0.01 cm/s.
400
Name a way that you can cause on object to become charged, besides touching another charged object.
What is induction or friction.
500
An object with more positive charge on one side and more negative charge on the other is said to be __________ or to have a ______ __________
What is polarized or a dipole moment.
500

Math Question: An object with charge 3 C is accelerated by an electric field that provides 5 volts of potential. The object is accelerated for 10 seconds. What is the average power of the system?

1.5 Watts

500
Math Question: A resistive heating element in a space heater has a voltage of 240 V and a resistance of 30 ohms. What is the power output of the device?
What is 1920 W.
500
Math Question: A 10 kg object is charged with 1 C of charge and placed in a location with potential of 500 V. The object is released and allowed to accelerate away. What is the maximum velocity this object can reach?
Velocity = 10 m/s
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