Electrical Engineering Fundamentals

Manual: General · Subject: Engineering Fundamentals

Explain electricity, circuits, voltage, current, resistance, and basic electronic components.

How electric systems work

Electric charge and current

Electric charge is a property of matter. Current is the flow of electric charge, measured in amperes $\left(\text{A}\right)$ . Voltage is the difference in electric potential that pushes charge through a circuit.

Ohm's law

A basic relationship in circuits is $V = IR$ , where $V$ is voltage, $I$ is current, and $R$ is resistance. Resistance measures how much a material or device opposes current.

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Circuit idea

A circuit is a closed path that lets electric current flow. If the path is broken, current usually stops.

Common electrical quantities

Quantity	Symbol	Unit
Voltage	$V$	volt $\left(\text{V}\right)$
Current	$I$	ampere $\left(\text{A}\right)$
Resistance	$R$	ohm $\left(\Omega\right)$
Power	$P$	watt $\left(\text{W}\right)$

In $V = IR$ , what does $R$ represent?

Radiation Resistance Rotation Recharge

What is current?

The flow of charge The amount of metal in a wire The color of a battery The shape of a resistor

What is a circuit?

Why do engineers use resistance in circuits?

Neuroanatomy Explorer

Memory Deck

Match the Pairs

Concept Constellation

Electrical Engineering Fundamentals

How electric systems work

Electric charge and current

Ohm's law