NCCER PRACTICE EXAM PT 3

A type of subatomic particle with a positive charge is a(n) _____.

• neutron

• nucleus

• proton

• electron

An electrical circuit contains, at minimum, a(n) _____.

• voltage source, load, and conductors

• voltage source, load, and overcurrent device

• ammeter, load, and voltage source

• resistor, conductors, and load

Another term used for voltage is _____.

• current

• emf

• joule

• coulomb

Which of the following substances is considered an insulator?

• Copper

• Porcelain

• Silver

• Gold

Joules are _____.

• the difference between voltage and current

• the potential difference between two points

• units of work

• the rate of current flow

A resistor has a color code of black, brown, brown, and silver. What is its resistance value and tolerance?

• 10Ω ±10%
• b) 10Ω ±10% 

• c) 12Ω ±5%

• d) 10Ω ±5%

Current is measured in units called _______.

• amperes

• volts

• watts

• joules

In a parallel circuit, the total resistance is _______.

• proportional to the smallest resistance

• less than the smallest resistance

• greater than the smallest resistance

• equal to the smallest resistance

Resistance is measured in _______.

• volt-amperes

• coulombs

• amperes

• ohms

Circuit continuity can be checked using a(n) _______.

• ammeter

• voltmeter

• ohmmeter

• wattmeter