Physics- What Is Resistance Flashcards Preview

Grade 9 November Exams > Physics- What Is Resistance > Flashcards

Flashcards in Physics- What Is Resistance Deck (10):
1

Conductors

Substances that allow the flow of electric charge through them

2

Although a conductor allows

The flow of charge, it will offer some resistance to this flow

3

Resistance

The opposition that a conductor offers to the flow of charge through it

4

Resistance is due to

Collisions between the moving charge (electrons) and the particles of a conductor

5

Resistor

Conducting material chosen to control the current ir to provide a useful energy transfer, such as bulbs, rheostats and motors

6

Conductors heat up when

The current passes through them and so sone energy is lost as heat

7

All metals are

Electrical conductors but some metals offer less resistance to the flow of electricity than others

8

Good conductors

Offer little resistance
Copper, silver and aluminum

9

Conductors that offer high resistance

Resistors
Tungsten and the metal alloy nichrome

10

Resistance is measured in

Ohms

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