Electric Charges and Fields

Static Electricity

Electricity that isn’t moving.

Relative Charge

How many more imaginary dots of a certain charge there is.

Induction (Polarization)

Breaking a charged thing close to a neutral object without touching.

Insulators

Charges cannot flow but the built-up charge stay stationary.

Conductors

Charges flow freely and the built-up charge is spread out. This allows it to facilitate the transfer of energy.

Charging by Friction

When materials are rubbed together, causing a transfer of electrons.

Charging by Induction

Conductors become polarized near charged objects.

Grounding

When electrons can go to or come from the ground.

Charge

“Q” is the measure of excess charge on an object.

Force Field

An area where if an object comes into an area, the field acts a force upon it which point to the center and gets weaker as the distance increases.

Electric Field

The charge matters.

Test Charge

“q” is an imaginary mobile charge placed in an electric field.

Point Charge

“Q” is a stationary source creating the electric field.

What is an electric field if there are opposite charges?

Curvy Lines.

What is an electric field if there are same charges?

There will be nothing between them.

Electric Potential Energy

Work done or gained by charge.

Electric Potential

The energy that a positive unit charge would have if it were placed at that point.

Capacitor

Conductors placed near each other and stores electric charge.