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NERC Study Set questions with complete solutions graded A+
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NERC Study Set questions with complete solutions graded A+
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NERC Study SetWhat are the two types of charges that exert the electrical force ?
•Electrons and protons
•Gravity and force
•Positive and negative
•Attraction and repulsion - correct answer ✔✔Positive and Negative
Metals are good conductors because they have which of the following?
•One or two electrons in their outer shell
•More electrons than protons
•A weak atomic shell structure
•Not enough protons in the nucleus - correct answer ✔✔•One or two electrons in their outer shell
Voltage in a circuit is often characterized as which of the following ?
•Electrical resistance
•Electrical energy
•Electrical pressure
•Electrical flow - correct answer ✔✔•Electrical Pressure
You have one ohm of resistance when one volt of potential difference causes which of the following to
flow ?
•Amp
•Current
,•Coulomb
•Voltage - correct answer ✔✔•Amp
What do we call a device that uses pressure to create electrical potential ?
•Piezoelectric
•Turboencabulator
•Squeezamatron
•Pressurelectrical - correct answer ✔✔•Piezoelectric
Insulator materials are typically which of the following ?
•Pure elements
•Compounds
•Special alloys
•Combinations of good conductors - correct answer ✔✔•Compounds
The fundamental law of electricity is which of the following :
•Like charges repel and unlike charges attract
•Electrical force is 1042 times stronger than gravity
•Particles in atoms have positive and negative charges
•Unlike charges repel and like charges attract - correct answer ✔✔Like charges repel and unlike charges
attract
Load in a circuit adds which of the following ?
•Current
•Resistance
,•Voltage
•Reactance - correct answer ✔✔•Resistance
If you are one foot away from a voltage source , and move to 5 feet away , how much weaker is the
electric field around that source ?
•10 times
•20 times
•5 times
•25 times - correct answer ✔✔•25 times
According to Ohm's Law , if a circuit has a 12 - volt source and a 6 - ohm resistor , how many amps are
flowing ?
•2
•1
•6
•4 - correct answer ✔✔•2
Kirchhoff's Current Law says which of the following ?
•All circuits have positive and negative currents
•Current measurements around a circuit add up to zero
•Source voltage plus current flow is always zero
•The algebraic sum of current into any junction is zero - correct answer ✔✔•The algebraic sum of
current into any junction is zero
Which of the following components make up a working circuit ?
Select all that apply .
, •Load
•Switch
•Insulation
•Source
•Conductor
•Current - correct answer ✔✔•Load
•Switch
•Insulation
•Source
•Conductor
Ohm's Law states which of the following ?
•Current in a circuit is inversely proportional to voltage and directly proportional to resistance
•Current in a circuit is directly proportional to voltage and inversely proportional to resistance
•Resistance in a circuit is directly proportional to voltage and inversely proportional to current
•Voltage in a circuit is directly proportional to current and inversely proportional to resistance - correct
answer ✔✔•Current in a circuit is directly proportional to voltage and inversely proportional to
resistance
Identify voltage and current behaviors described by Kirchhoff's Law .
•All circuits have positive and negative voltages
•Source voltage plus current flow is always zero
•The algebraic sum of currents is always zero
•Voltage measurements around a circuit add up to zero - correct answer ✔✔•Voltage measurements
around a circuit add up to zero
Which of the following is not a series circuit rule ?
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