AC/DC

when 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

Kirchoff’’s 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