Charging by Induction and Grounding ELECTRICITY Learning Goals

Charging by Induction and Grounding ELECTRICITY

Learning Goals To be able to explain charging by induction To be able to explain grounding

Induced Charge Separation

Induced Charge Separation The electrons shift in position because a charged object is brought near it This explains how a charged balloon is attracted to a neutral wall A temporary charge is induced in a wall when a charged balloon is brought close to the wall

Charging by Induction A neutral object is charged by bringing a charged object close to, but not touching, the neutral object

Grounding A charged object can be made neutral by adding or removing electrons Grounding – removing charges from objects by contact with a large neutral object

If the object is Negative + - - - + - Electrons leave the object If the object is Positive + + Electrons enter the object

Discharging and Grounding

Discharging and Grounding Electric discharge occurs when the hand gets close enough to the faucet Excess electrons are RAPIDLY transferred from the hand to the faucet The faucet is grounded (connected to Earth) Both the hand the faucet are neutral

Application Technicians working on electronic devices always make sure they are grounded to avoid damage to equipment For large ocean ships, the ocean acts as a ground For planes, the body of the plane acts as a ground for the electronic devices on the plane

Success Criteria I CAN explain charging by induction I CAN explain grounding