Ch 13 Electricity Exam Review

The movement of electrons from one atom to another along a conductor is called ________.

• an electric charge

• electricity

• energy flow

• sparks

Electric wires can be covered with a material that does not transmit electricity such as a rubber or plastic coating. This material is known as ______.

• an insulator

• a conductor

• a circuit

• a fuse

An apparatus that changes direct current to alternating current is _______.

• a rectifier

• a circuit breaker

• an inverter

• a fuse box

The term ______ refers to a rapid and interrupted current, flowing first in one direction and then in the opposite direction.

• rectifier current

• alternating current

• active current

• direct current

The unit that measures the pressure or force that pushes the electric current forward through a conductor is _______.

• an amp

• a watt

• an ohm

• a volt

Which unit measures the resistance of an electric current?

• Ohm

• Watt

• Amp

• Volt

The device that prevents excessive current from passing through a circuit is called ______.

• a fuse

• a battery

• a kilowatt

• an ampere

A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is _________.

• a voltage regulator

• an ampere interrupter

• a circuit breaker

• a battery charger

The negative electrode of an electrotherapy device is called __________.

• an anode

• an electron

• a carbide

• a cathode

A process that infuses an alkaline product into the tissues from the negative pole toward the positive pole is called _______.

• a cataphoresis

• an anaphoresis

• an iontophoresis

• a micorcurrent