1. Charging by
Induction

2. Electroscope No Charge- leaves hang straight down 10 Protons
10 Electrons

3. Induction
Rod with negative charge is brought
CLOSE

4. Induction Rod with negative charge
Pushes electrons in electroscope down
into leaves
Note: Electroscope still has only 10 Protons and 10 Electrons

5. Induction Ground Electroscope
Electrons move out of electroscope to ground
Reason:
(like charges repel)

6. Induction Remove Ground from Electroscope Note electroscope has:
10 Protons
4 electrons

7. Induction
Remove rod
Positively charged ball at top attracts electrons from leaves
10 Protons
4 Electrons

8. Induction Electroscope is now POSITIVELY charged
Therefore, leaves are positively charged and REPEL each other
10 Protons
4 Electrons