Chapter 6 DC Series Circuits

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More power is produced when a load's resistance is high or it's applied voltage is low

false, resistance is low , voltage is high

When a DMM set to measure current inserted in series at every junction of the components in a series circuit, it reads a different current value at each junction

false, the same current value

voltage multiplier is a circuit made of resistors connected in series to produce a desired voltage drop across the resistors

false, voltage divider

A____ is a low-resistance conducting connection between electrical and electronic circuits, equipment, and the earth

ground

Not all sources of electrical potential have internal resistance

false, All

A series circuit has two current paths

false, one

The total power in a circuit of six loads are connected in series and each load produces 20 W is ___W

120

The voltage drop across an 8 ohms resistor in a circuit that has a total current of 8 A is _____V

16

The actual voltage of a 208 V circuit with a load resistance of 25 ohms and load current of 8 A is ____V

200

The minimum allowable voltage at the load of a 208 V circuit with a load resistance of 25 ohms and load current of 8 A is ____V

201.76

The voltage drop across a 2 ohms resistor in a circuit that has a total current of 12 A is ____V

24

The total power in a circuit if four loads are connected in series and each load produces 60 W is _____W

240

The national code suggest that conductors be sized so that they do not reduce the voltage at the load by more than____% of the source voltage

3%

The supply voltage in a series circuit containing a total resistance of 3 ohms and total current of 12 A is ____V

36

The supply voltage in a series circuit containing a total resistance of 5 ohms and total current of 15 A is ____V

75

In a complex circuit, the source voltage is designated as ______

V-t

In a series circuit, the sum of the voltage increases is equal to the source votlage

false

Whenever the load resistance is matched to the source, less than maximum power is delivered to the load

false

To find total resistance in a series circuit, the values of the resistors in the circuit are_____

added

____ is the flow of electrons through an electrical circuit

current

Voltage______ is the amount of voltage used by a device when current passes through it

drop

A ground is a unlimited source and acceptor of _____ in a circuit

electrons

Current is the flow of ______ through an electrical circuit

electrons

____ is produced any time electrons flow through a wire that has resistance

heat

A power rating is listed in watts for appliances and in _____ for motors

horsepower

Maximum _____ transfer between a source and load depends on the load resistance matching the source resistance

power

____ produced is measured in watts

power

Current has the same value at any point in a(n) _____ circuit

series

A complex circuit includes two or more resistive loads

true

A listed power rating is given in watts (W) for most appliances or in horspower (HP) for motors

true

Certain types of electronic systems require both a positive and negative source of voltage for proper operations

true

Efficiency of a circuit can be determined by dividing the power at the load by the total power output

true

Electrons have bodies that can be counted

true

Heat is produced when electrons flow through a wire that has resistance

true

Resistors are available with a variety of power ratings

true

The lower a load's resistance, the more power produced in a series circuit

true

Voltage drop is proportional to the resistance value of the resistors in a series circuit

true

Ohm's law can be used to calculate the ____ drop across any resistor

voltage

A_____ is a circuit that is constructed by connecting resistors in series to produce a desired voltage drop across the resistors

voltage divider

___is the amount of voltage consumed by component as current passes through it

voltage drop

When selecting a heating element for an application, the size of the heating element is typically stated in _____ and is based on the application

watts


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