Studied by 32 peoplewhen the wire or foil strip inside a fuse melts, the fuse is said to be
Blown
The difference between a fuse and a circuit breaker is __________
circuit breakers can be reset and used again
Which of the following is a formula for calculating power?
P= I x E
Which of the following is a type of circuit protection device?
Fuse
Kirchoffāās Voltage Law for a series circuit says that the total voltage is equal to _____________-
The sum of the voltage drops
To find the total resistance in a series circuit
Add the individual resistance
Which of the following is a formula for calculating total resistance in a parallel circuit?
RT = 1(1R+1/R2+1/R3)
Which is not an application of Ohms Law?
none of the above
The current that flows from and back to the power supply in a parallel circuit is called ____________ current
Main Line
The measure of energy consumed by a circuit is called__________
Power
Resistance is measured in units of
Ohms
An _________ is used to measure resistance.
Ohmmeter
A multimeter is a multipurpose device that can measure
Voltage, current, and resistance
The potential difference between two points in a circuit is called
Voltage
An ammeter is used to measure
Current
The amount of voltage that is used by each load depends on the ____________
of each load.
Resistance
If a wire has continuity, it __________
Will have almost no resistance
is a measurement device specifically used to measure only voltage.
Voltmeter
Which of the following statements is not true about measuring the resistance of a component that is connected in a circuit?
Turn off the power supply.
To measure current through a component, the ammeter must be connected ___________ the component
In series with
circuit is one in which there is only one path for current to travel.
Series
A known reference point in an electrical circuit is called a
Common
Current in an ___________ circuit is divided among the branches of the circuit.
Parallel
When loads are connected in series, their individual resistances are
Added
Current is measured in units of
Amps
A knife switch consists of a lever and one or more sets of
Contacts
Which of the following is a manually operated switch?
Pushbutton switch
Selector switch
Knife switch
determines if electricity is present in a circuit.
Circuit tester
The electrical wall outlets at home are a source of __________ current
Alternating
Electricity is the flow of ____________ in a conductor
Electrons
A simple method for opening or closing a circuit is to use a
Switch
Which of the following is not a component of a basic electrical circuit?
Insulator
Which of the following is an electrical output device?
Motor
Lamp
Resistor
Rotary motion is the output of which electrical output device?
Motor
The contacts of an _____________ switch are open until acted on by the operator.
Normally opened
Which of the following is true of an electrical schematic diagram?
Represents components with standard symbols
Shows how the components are interconnected
Is helpful in troubleshooting a circuit.
Constant voltage power supplies will maintain a constant voltage output under varying
Loads
Note 
Flashcard (22)