3 Ways to Charge Charge Polarization

1
3 Ways to ChargeCharge Polarization

• 2/28/07

2
32.5-6 3 ways to create charge

• Friction- rubbing moves electrons
• Ex. Fur/rod balloon/hair car/road
• Contact - conductor takes electrons from charged
  object
• Ex. metal pans on Van der Graaf
• Induction- movement of electrons on conductor
  surface to create charge without contact

Figure 32.8 pg 510
Charge is induced to move away
3
32.6 Induction electroscope demo
Uncharged
Charged
4
32.7 Charge Polarization
Charged Balloon
Wall (or other insulator)


Charge is polarized in non-conducting
wall Movement of charge within molecules






5
32.7 Lightning- example of polarization

• Polarization in clouds due to friction (water
  and ice moving due to wind)
• Grounding of charge after polarization

DRAW THIS