Physics- What Is Resistance

Question 1

Conductors

Answer 1

Substances that allow the flow of electric charge through them

Question 2

Although a conductor allows

Answer 2

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

Question 3

Resistance

Answer 3

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

Question 4

Resistance is due to

Answer 4

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

Question 5

Resistor

Answer 5

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

Question 6

Conductors heat up when

Answer 6

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

Question 7

All metals are

Answer 7

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

Question 8

Good conductors

Answer 8

Offer little resistance

Copper, silver and aluminum

Question 9

Conductors that offer high resistance

Answer 9

Resistors

Tungsten and the metal alloy nichrome

Question 10

Resistance is measured in

Answer 10

Ohms