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

2. Charging by Contact – Conduction
Charging by Conduction: charging an object by contact with a charged object
charging by contact

3. Charging by Contact – Conduction
-negative object touched to a neutral object
Before touching After touching
neutral negative

4. Charging by Contact – Conduction
-negative object touched to a neutral object
Before touching After touching
neutral negative negative negative

5. Charging by Contact – Conduction
-positive object touched to a neutral object
Before touching After touching
positive neutral

6. Charging by Contact – Conduction
-negative object touched to a neutral object
Before touching After touching
positive neutral positive positive

7. Charging by Contact – Conduction
Electroscope: a device used to detect static charge
electroscope charging

8. Charging by Contact – Conduction
Electroscope: a device used to detect static charge
-any charge added to the electroscope will spread out all through it

9. 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

10. Charging by Contact – Conduction
Electroscope: a device used to detect static charge
-charging with a negative object
negative (4-)
Before Contact
neutral

11. 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-)

12. Charging by Contact – Conduction
Electroscope: a device used to detect static charge
-charging with a positive object
positive (4+)
Before Contact
neutral

13. 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+)

14. Charging by Induction

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

16. Charging by Induction
Temporary charging by induction:
Negative: the negative charge will drive the electrons of the neutral object away

17. 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!

18. 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

19. 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.

20. Charging by Induction
Temporary charging by induction:
Negative:

21. Charging by Induction
Temporary charging by induction:
Positive: the positive object attracts the electrons of the neutral object

22. 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

23. 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

24. Charging by Induction
Temporary charging by induction:
Positive:

25. Charging by Induction
Permanent charging by induction:
Negative:
1. start with a neutral object

26. Charging by Induction
Permanent charging by induction:
Negative:
2. bring a negative charged object close so the electrons are driven to the far side

27. Charging by Induction
Permanent charging by induction:
Negative:
3. ground the neutral object so the electrons can leave

28. Permanent charging by induction: Negative:
4. remove the ground and the object has a positive charge
charging by induction tvo video