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

Charging by Contact – Conduction

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

5+ 2+5- 8-0 6-

Charging by Contact – Conduction

-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-

Charging by Contact – Conduction

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

5+ 2+3- 2-2+ 0

Charging by Contact – Conduction

-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+

Charging by Contact – Conduction

Electroscope: a device used to detect static charge

electroscope charging

Charging by Contact – Conduction

Electroscope: a device used to detect static charge

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

Charging by Contact – Conduction

Electroscope: a device used to detect static charge

-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 by Contact – Conduction

Electroscope: a device used to detect static charge

-charging with a negative object

negative (4-)

Before Contact

neutral

Charging by Contact – Conduction

Electroscope: a device used to detect static charge

-charging with a negative object

negative (1-)

After Contact-leaves repel due to like charges

negative (3-)

Charging by Contact – Conduction

Electroscope: a device used to detect static charge

-charging with a positive object

positive (4+)

Before Contact

neutral

Charging by Contact – Conduction

Electroscope: a device used to detect static charge

-charging with a positive object

positive (1+)

After Contact-leaves repel due to like charges

positive (3+)

Charging by Induction

Charging by Induction

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

Charging by Induction

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

the electrons of the neutral object away

Charging by Induction

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

the electrons of the neutral object away

*remember: protons don't move!

Charging by Induction

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

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

charged object

Charging by Induction

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

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.

Charging by Induction

Temporary charging by induction: Negative:

Charging by Induction

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

electrons of the neutral object

Charging by Induction

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

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

positive object where the electrons gather

Charging by Induction

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

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

Charging by Induction

Temporary charging by induction: Positive:

Charging by Induction

Permanent charging by induction: Negative:

1. start with a neutral object

Charging by Induction

Permanent charging by induction: Negative:

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

side

Charging by Induction

Permanent charging by induction: Negative:

3. ground the neutral object so the electrons can leave

Charging by Induction

Permanent charging by induction: Negative:

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

charging by induction tvo video