electric fields and electric energy

electric fields and electric energy

1. the electric field can be visualized

   • point charge electric fields decrease with distance

2. determining the force on a charge

3. electric dipoles

   • defined as a couple of opposite charges q and -q separated by a distance d.

4. the electric field is the amount of force per change

5. infinite plates and parallel-plate capacitors

6. electric fields add together

7. voltage is the electric potential energy per change

8. charging induction

   • an object can be charged without ever touching it

9. some animals can produce and detect electric fields.

10. types of charges

    • opposite charges
    • like charges