Charging by Conduction and Induction Note: It is not necessary to copy all the details of all the examples.

Charging by Conductionand Induction

Note: It is not necessary to copy all the details of all the examples

Charging by Contact – Conduction

Charging by Conduction: charging an object by contact with a charged object

charging by contact


-negative object touched to a neutral objectBefore touching After touchingneutral negative

5+ 2+5- 8-0 6-


-negative object touched to a neutral objectBefore touching After touchingneutral negative negative negative

5+ 2+ 5+ 2+5- 8- 8- 5-0 6- 3- 3-


-positive object touched to a neutral objectBefore touching After touchingpositive neutral

5+ 2+3- 2-2+ 0


-negative object touched to a neutral objectBefore touching After touchingpositive neutral positive positive

5+ 2+ 5+ 2+3- 2- 4- 1-2+ 0 1+ 1+


Electroscope: a device used to detect static charge

electroscope charging



-any charge added to the electroscope will spread out all through it



-any charge added to the electroscope will spread out all through it

-any time the leaves get a charge, they have the same charge so they repel & spread apart



-charging with a negative object

negative (4-)

Before Contact

neutral



-charging with a negative object

negative (1-)

After Contact-leaves repel due to like charges

negative (3-)



-charging with a positive object

positive (4+)

Before Contact

neutral



-charging with a positive object

positive (1+)

After Contact-leaves repel due to like charges

positive (3+)

Charging by Induction


Charging by induction: charging a neutral object by bringing a charged object close to, but not touching, the neutral object.


Temporary charging by induction: Negative: the negative charge will drive

the electrons of the neutral object away



the electrons of the neutral object away

*remember: protons don't move!



the electrons of the neutral object away-creates a positive area close to the

charged object



the electrons of the neutral object away-creates a positive area close to the

charged object-creates a negative area away from the

charged objects where the electrons gather up.


Temporary charging by induction: Negative:


Temporary charging by induction: Positive: the positive object attracts the

electrons of the neutral object



electrons of the neutral object-creates a negative area close to the

positive object where the electrons gather



electrons of the neutral object-creates a negative area close to the

positive object where the electrons gather-leaves the object positive on the side

away from the positive object


Temporary charging by induction: Positive:


Permanent charging by induction: Negative:

1. start with a neutral object



2. bring a negative charged object close so the electrons are driven to the far

side



3. ground the neutral object so the electrons can leave



4. remove the ground and the object has a positive charge

charging by induction tvo video

Charging by Conduction and Induction Note: It is not necessary to copy all the details of all the examples.

Documents

negative object negative

induction temporary

induction slide

induction permanent

positive object positive

neutral object

contact conduction charging

neutral slide