📖 what
What is electrical resistance?
Quick Answer
Electrical resistance is how much a material opposes the flow of electric current. It is measured in ohms.
The Full Story
Resistance depends on the material, its temperature, its shape, and its length. Materials with low resistance, such as copper, are good conductors, while materials with very high resistance, such as rubber, are insulators. Ohm’s law relates voltage, current, and resistance, making resistance a core concept in circuit design. When current passes through a resistor, energy is often converted into heat. Resistance is fundamental to everything from light bulbs to computer chips.
Key Facts
1.Measured in ohms
2.Copper has low resistance
3.Resistance can convert electrical energy to heat
YouTube Angle
Suggested video title for this topic:
"Why some materials let electricity flow and others block it"
Was this answer helpful?
Tap a reaction — it helps us pick what to cover next.