7/26/2019 Static Electricity Concept Map1

1/1

Interaction of Charges

Charged objects may attract an uncharged object by

inducing a charge in it.

Objects with the same charges repel and objects with

opposite charges attract.

Force of attraction or repulsion depends on

The magnitude of the charge- the greater

the charge the greater the attraction orrepulsion.

How close the charges are- the closer the

The Fundamentals

There are two types of charges, negatiely charged protons

and positiely charged protons. Only the positiely charged electrons can moe easily.

!nli"e charges attract while li"e charges repel.

Charge is consered. The can neither be destroyed nor

#roducing $tatic Charges

$tatic charges can be produced by friction, induction and by

Charging %y Friction

& static charge is obtained by rubbing a hard insulator

wait a soft insulator.

'ubbing causes electrons to moe from one rubbedmaterial to the other. The material rubbed ac(uire

opposite charges.

Charging %y Induction

Induction charging is a method used to charge an object without actually touching the

object to any other charged object.

)lectric Field

& charge object has an electric field surrounding it.

)lectric fields are represented on diagrams by field

lines of force.

Conduction and Insulation

Conductors allow electrical currents to flow through them with minimum

opposition. *etals are good conductors of electricity because their atoms hae one

or more loosely held electrons in their outer shell.

In some materials, all the electrons, including the outer ones, are tightly bound and

are therefore not free. In these materials, "nown as insulators

Charging %y Contact

&n uncharged conductor which is in contact with a

charged conductor ac(uires the same sign of charge

*aterialsStatic Electricity