Electricity

forms of current

100

________ is a rapid or interrupted electrical current that switches direction, moving in one direction then changing to the opposite direction. (Ex. blow dryers, curling irons, and flat irons)

AC/ Alternating current

200

_____ is an electric current that flows in only one direction. (ex. Cordless clipper/trimmer) A

DC/ Direct Current

300

• A ______ is a device that switches DC to AC

converter

400

• A _____ is a device that switches AC to DC

• rectifier

500

• ________ is the flow of positive and negative currents from a generating source through a conductor and back to the generating source.

Complete Electrical Current

forms of transmission

100

_______ is any material that allows or supports the flow of electric current. (Ex. metal, copper, water)

conductor

200

• ______ is a material that prevents the flow of electricity. (Ex. cement, glass, rubber, silk, wood) The covering on electrical wires insulated the electrical current to prevent electrical shock.

insulator/nonconductor

300

_______ is the unit for measuring the force or pressure of an electrical current.

Volt

400

• _______ is the unit for measuring the strength of an electric current. This is often used in the description of an amplifier, which refers to the increased strength and flow of the electricity

Ampere

500

______ is the unit for measuring the resistance of an electrical current

Ohm

safety in electricity

100

_____ box contains small devices with metal wires that link to a main source of electricity for the entire building.

fuse

200

is a term used to promote electrical safety, which means the electrical current is safely carried away from you to the ground.

Grounding

300

_____________ is a device that automatically stops the flow of electricity in a circuit. This is accomplished by automatically disconnecting or shutting down electricity at the implication of an overload or electrical short, and can be reset rather than replaced.

Circuit Breaker Box/panel

forms of current

100

_____ measures the amount of electrical energy used by an apparatus within one second.

watt

200

• ______  is 1/1000 of an ampere. Electrical equipment used for facial treatments have controls that allow the current to be reduced to 1/1000 of an amp. This will prevent damage to delicate skin. 

milliampere

300

• ________ measures 1000 watts of electrical power used in an apparatus within one second.

kilowatt