Charge Basics
The two kinds of electric charge.
Positive and negative
Charge hops across when two objects touch.
Charging by contact
Unlike charges do this.
Attract
A battery’s voltage comes from these reactions that separate charge.
Chemical
A device that stores charge on facing plates.
A capacitor
Charge is conserved, which means this
Cannot be created or destroyed
Connecting a conductor to Earth so extra charge can leave.
Grounding
Like charges do this.
Repel
Potential difference is also called this.
Voltage
The unit of capacitance.
The Farad
Charge is quantized, which means this
It comes in whole-number packets
You charge a metal can without touching it by holding a rod nearby.
Induction
Force grows with the charges and shrinks with the square of this.
Distance
One volt is one joule per this.
Coulomb
An insulator slipped between plates that can be polarized.
A dielectric
Charge moves freely through this kind of material.
A conductor
After induction plus a ground wire, then removing both, the can keeps this.
A net charge
Field arrows are drawn from this sign of charge toward the other.
Positive
Energy a charge has because of its place in a field.
Electric potential energy
Adding that insulator does this to capacitance.
Increases it
Charge cannot move freely through this type of material
An insulator
A nearby charge lines up the molecules in an insulator.
Polarization
Evenly spaced parallel arrows between two plates form this sort of field
Uniform
The push a battery supplies to drive charge around a loop.
Emf
Lightning is this sort of event
Discharge