NEC General Electrical Theory & Code Definitions

Question 1

What is the unit of electrical resistance?

Accepted Answer

Ohm

Answer

Volt

Answer

Watt

Answer

Ampere

Question 2

What does Article 100 of the NEC cover?

Accepted Answer

Definitions

Answer

Wiring methods

Answer

Permits and approvals

Answer

Lighting systems

Question 3

Which law explains the relationship between voltage, current, and resistance?

Accepted Answer

Ohm’s Law

Answer

Faraday’s Law

Answer

Newton’s Law

Answer

Kirchhoff’s Law

Question 4

What is the basic unit of electric current?

Accepted Answer

Ampere

Answer

Ohm

Answer

Volt

Answer

Watt

Question 5

Which NEC article outlines general requirements for electrical installations?

Accepted Answer

Article 110

Answer

Article 90

Answer

Article 310

Answer

Article 250

Question 6

What is the purpose of grounding in electrical systems?

Accepted Answer

Enhance safety during faults

Answer

Increase current flow

Answer

Improve lighting

Answer

Prevent corrosion

Question 7

What is the function of a conductor in an electrical circuit?

Accepted Answer

Allow current to flow

Answer

Resist electricity

Answer

Measure voltage

Answer

Store electricity

Question 8

Which of the following is a correct definition from the NEC?

Accepted Answer

Grounded conductor

Answer

Hot conductor

Answer

Floating conductor

Answer

Loaded conductor

Question 9

What does the NEC stand for?

Accepted Answer

National Electrical Code

Answer

National Energy Code

Answer

National Electronics Council

Answer

National Electrician Certification