3) Signalling

Question 1

Resistance

Answer 1

Resistance (R)
R = V/I
How much a current is impeded when flowi through somethig

Question 2

Conductance

Answer 2

Conductance (G)
G = I/V or G = R/V
The opposite of resistance, and tells us how easy it is for a current to flow through something.

Question 3

Resistivity

Answer 3

Resistivity (ρ)
ρ = RA/l
The resistivity of a material is the property that determines

Question 4

Conductivity

Answer 4

Conductivity (σ)

Conductivity is the reciprocal of resistivity