~ 5/16/17 ~ Objective #31: I can explain the 2 types of electricity, how they work, & the dangers involved. CHECKPOINT #6: What is electricity? What are.

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Presentation transcript:

~ 5/16/17 ~ Objective #31: I can explain the 2 types of electricity, how they work, & the dangers involved. CHECKPOINT #6: What is electricity? What are the 2 types of electricity? Where does each type of electricity come from?

Electricity

electricity energy associated with the flow (movement) of electrical charges energy associated with the concentration (static) of electrical charges

static electricity gathering of excess electrical charges static = unmoving, not doing work (potential) static discharge results when charge jumps gaps (i.e., cloud to ground lightning) creating a spark

current (I) the rate that electric charges move through a conductor measured in amperes (amps)

The amount of energy passing a point per a unit of time. AMPERES The amount of energy passing a point per a unit of time.

current electricity movement of electrical charges through a conductor 2 forms: direct current alternating current

direct current (DC) current electricity that flows in only 1 direction; i.e., from a battery, current flows from the negative terminal to the positive terminal

alternating current (AC) current that flows in first in one direction and then in the opposite direction electric charges move back and forth in a conductor i.e., electricity from wall outlet reverses directions @ 60 Hz (60 cycles per second)