Resistivity

Question 1

What is resistivity opposite to?

Answer 1

Conductivity

Question 2

What is resistivity?

Answer 2

a property in which materials will inhibit different currents due to structure differences (defines resistance based on dimensions)

Question 3

Can resistivity change?

Answer 3

yes, as it is related to the amount of charge carriers and hence changes with temperature

Question 4

What is the equation for resistivity?

Answer 4

R = pl/a 
where 
r = resistance
p = resistivity 
l = length 
a = area

Question 5

What is ohm’s law?

Answer 5

states that current is directly proportional to pd as long as temperature is constant

Question 6

Object obeying ohm’s law is called?

Answer 6

ohmic conductor

Question 7

What does this law mean for the resistance?

Answer 7

It stays constant