Question

A Rectangular block of iron has dimensions L X L X b. What is the resistance of the block measured between the two square ends? Given ρ= resistivity.

Answer 1

Answer:

As we know

R = ρ L/A

where ρ is resistivity of the material

Here in this case, length is given as L

and area is given as L×b

So,

Resistance,R = ρ L/Lb

= ρ/b