INVESTIGATION+OF+STATIC+ELECTRIC+CHARGES

Back to HOME > IGCSE PHYSICS > ELECTRICITY > CHARGE == =INVESTIGATION OF STATIC ELECTRIC CHARGES= Electric charges can be created on an insulator by rubbing it with a cloth. Certain plastics gain a postivie charge and others a negative charge. You are going to investigate the effects of electric charges on each other by placing one charged plastic rod on a turntable (made of two watchglasses) and approaching with another rod. Record whether the force between the plastic rods is Repulsive (R) or Attractive (A). PHOTO

RESULTS
 * Plastic || WHITE || BLACK ||
 * WHITE || R or A? ||  ||
 * BLACK ||  ||   ||

What is the general rule for similar and opposite charges? What effect does each charged rod have on a thin stream of water from a tap? Can you demonstrate the effects of electric charges using balloons? What effect do the rods have on other objects such as a metal drinks can or small pices of paper?