Basic Concepts of Electricity

What are the two broad categories of resistors?

• big and small resistors

• round and square resistors

• fixed and variable resistors

• black and white resistors

What are resistors used for ?

• reduce current flow

• to increase current flow

What is the oldest and most common type of resistor?

• Film Resistor

• Printed Carbon

• Carbon Composition

• Wound Wire

what is a resistor made out of?

• a mixture of finely powdered carbon and an insulating material

• a mixture of finely powdered carbon and a conducting material

• none of above

• a mixture of finely powdered oxygen and an insulating material

Fixed resistors have ____ ohmic value.

• ONE

• TWO

• FOUR

• THREE

The symbol pictured represents what?

• A fixed resistor

• A standard resistor

• A variable resistor

• A rheostat

A fixed resistor can have two different resistance values depending on the application.

• False

• True

The 3 basic types of FIXED resistors, based on their construction are:

• Carbon composition, film and rheostats

• Carbon composition, film and wire wound

• Carbon composition, film and potentiometers

• Carbon composition, wire wound and rheostats

What is the advantage of a wire wound resistor?

• They are inexpensive

• They can operate at higher temperatures

• They have fixed values

• They do not require a large amount of space for mounting.

Increasing the length & thinness of a wire-wound resistor would...............

• Decrease resistance

• Not affect resistance

• Increase resistance