Front

What is the circular mil system?

Back

A unit of area used to measure the cross-sectional area of a wire, based on its diameter in mils (thousandths of an inch). It is not dependent on the material of the conductor.

Front

What does Lockout-Tagout (LOTO) mean?

Back

A safety procedure used to ensure that dangerous machines are properly shut off and not started up again prior to the completion of maintenance or servicing work.

Front

How is the force of electron flow measured?

Back

The force of electron flow is measured in volts, not amperes. Amperes measure the flow of electric current.

Front

What is required to receive a serious electrical shock?

Back

A serious electrical shock can occur with low voltage and high current, depending on the path through the body and the duration of exposure.

Front

Calculate the current produced by a 24-volt battery connected to a 6-ohm resistance.

Back

4 amperes (using Ohm's Law: I = V/R, where I is current, V is voltage, and R is resistance).

Front

What is Ohm's Law?

Back

A fundamental principle in electronics stating that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor.

Front

Define voltage.

Back

Voltage, or electric potential difference, is the measure of the potential energy per unit charge available to drive electric current through a circuit.

Front

What is the difference between AC and DC current?

Back

AC (Alternating Current) is an electric current that reverses direction periodically, while DC (Direct Current) flows in one direction only.

Front

What is the purpose of a fuse in an electrical circuit?

Back

A fuse is a safety device that protects an electrical circuit by breaking the circuit if the current exceeds a certain level, preventing overheating and potential fires.

Front

What does it mean for a circuit to be in series?

Back

In a series circuit, components are connected end-to-end, so the same current flows through each component, and the total resistance is the sum of individual resistances.