5 Fundamentals of Electricity: Unit 5 - Resistors

1 ft-lb/s = _____ Watts

1.36

Wire-wound resistors are often used because they are able to operate at _____ power levels than other resistors.

higher

Magnetic _____ _____ _____ repel each other and never cross.

lines of flux

Connecting a 150 Ω, ½-W resistor to a 9-V supply will damage it.

True

Many resistors use bands of color to indicate the ohmic value and tolerance of resistor. These bands are interpreted by referring to a "color code."

True

24 Ω is a standard value for 10% tolerance resistors.

False (33 is the correct answer)

A/n _____ is the smallest part of an element.

atom

When resistors are manufactured, the processes are not perfectly exact. Each resistor may be slightly different from the next one. The plus and minus limits of a resistor's marked value is called the _____.

tolerances

A resistor whose value can be varied over a range of values is called a _____ resistor.

variable

A 30-Ω resistor is connected to a 4-V supply. How many watts will this resistor have to dissipate?

.53 Watts

A resistor has color bands of brown, black, red and silver.. What is the resistance and tolerance of the resistor?

1000 Ω

A resistor has color bands of red, violet, brown and gold. What is the resistance and tolerance of the resistor?

270 Ω

A resistor made by applying a film of carbon to a ceramic rod is the _____ resistor.

carbon film

A resistor made from a compound of carbon and resin bonding material is the _____ resistor.

composition carbon

Nuisance static charges are more likely to occur when the air is _____.

dry

Resistors which have only one ohmic value are called _____ resistors.

fixed

A resistor made by applying a film of metal to a ceramic rod in a vacuum is the _____ resistor.

metal film

A resistor made by combining metal with glass and then applying it to a ceramic base as a thick film is the _____ resistor.

metal glaze

A variable resistor that has a shaft that rotates more than one rotation is called a _____ variable resistor.

multi-turn

A variable resistor is also called a _____.

pot switch

A variable resistor with three terminals is called a _____.

pot switch

A variable resistor with two terminals is called a _____.

rheostat

In a circuit that has very little resistance, almost any applied voltage will result in huge amounts of current. This is called a _____ circuit.

short

A resistor made by winding a piece of resistive wire around a ceramic core is the _____ resistor.

wire-wound

When two or more resistors are connected in series across a voltage supply, each of the resistors will have a voltage across it. The resistor network is known as a _____.

voltage divider