Electrostatics: Charges & Forces
This is the charge a neutral object has after it gains extra electrons.
What is negative?
This is the region around a charge where another charge experiences a force.
What is an electric field?
These particles move through metal wires in a typical circuit.
What are electrons?
This happens to the other branches of a parallel circuit when one branch is disconnected.
What is they continue operating with increased current?
This type of field stores energy in a capacitor.
What is an electric field?
This is what two objects have if they attract each other electrically.
What is opposite charges?
This is the direction electric field lines point near a negative charge.
What is towards from the negative charge (inwards)?
This is why two identical bulbs in series are dimmer than one bulb alone.
What is greater resistance or decreased current?
This is why every appliance in a household receives the same voltage.
What is each device being connected across the same potential difference (parallel)?
This type of field stores energy in an inductor.
What is a magnetic field?
This law explains that the magnitude of the electric force decreases as two charges get farther apart.
What is Coulomb's Law?
This is the difference in electrical potential energy per charge between two locations.
What is voltage (or electric potential difference)?
This happens when a wire is made thicker while keeping the same material.
What is the resistance decreases?
This is why a short circuit can damage electrical systems.
What is extremely low resistance causing excessive current?
This explains why a capacitor eventually stops allowing steady DC current after charging.
What is the capacitor voltage opposing additional charge movement?
This explains why a charged balloon can attract a neutral conductor.
What is induced charge/polarization?
This is what a battery provides that causes charges already in a circuit to move.
What is voltage or electric potential difference?
The type of circuit that classrooms use for the lights above your heads.
What is a parallel circuit?
This occurs when all the resistors are replaced by a wire in a circuit.
What is a short circuit?
This is what an inductor resists.
What are sudden changes to current?
This happens to the electric force between two charges when the distance between them decreases.
What is increases (proportional to 1/r^2)?
This is where energy is stored when a capacitor is charged.
What is the electric field between the capacitor plates?
This component would be chosen to smooth voltage changes and temporarily store charge.
What is a capacitor?
This is the type of circuit in which the total resistance is found using 1/Rtotal=1/R1+1/R2.
What is a parallel circuit?
This explains why energy can continue moving between a capacitor and an inductor.
What is energy transferring between electric and magnetic fields?