Ch 20 Vocabulary

______ is the measure of how strongly a wire or other object resists current flowing through it.

• Ohm

• Resistance

• Battery

• Voltage

_____ is a measure of electric potential, just like height is a measure of gravitational potential energy.

• Multimeter

• Resistor

• Coulomb

• Voltage

_____ are used to turn electricity on and off.

• Wires

• Switches

• Bulbs

• Timers

A circuit with no breaks is called a ______ ______

• open circuit

• closed circuit

• broken circuit

• weak circuit

A ______ is an instrument that can measure voltage, current and resistance.

• Multimeter

• Battery

• Ruler

• Volimeter

A _____ is a type of variable resistor that can be adjusted to give resistance within a certain range.

• multimeter

• resistor

• switch

• potentiometer

Electrical resistance is measured in units called

• coulombs

• newtons

• ohms

• volts

A _____ is an electrical device that uses the energy carried by electric current in a specific way.

• resistor

• switch

• bulb

• wire

The science of electric charge and current is called _____

• physics

• electricity

• static

• power

The unit of charge is the _____

• coulomb

• ohm

• volt

• meter