Resistance and specific resistance?

Question

What's the difference between Resistance and specific resistance?

Answer 1

Specific resistance is a property of a material therefore it is independent of size and shape. While resistance is not a material property but a property of the system you are working with so size shape temp etc.. all play a role.

Answer 2

You know resistance is something that inhibits electricity to flow in a conductor. Here is specific resistance;
We know that the wire length is 2300 feet for each piece of wire, but how do we determine the amount of resistance for a specific size and length of wire? To do that, we need another formula:

R= rho*l/A

This formula relates the resistance of a conductor with its specific resistance (the Greek letter "rho" (ρ), which looks similar to a lower-case letter "p"), its length ("l"), and its cross-sectional area ("A"). Notice that with the length variable on the top of the fraction, the resistance value increases as the length increases (analogy: it is more difficult to force liquid through a long pipe than a short one), and decreases as cross-sectional area increases (analogy: liquid flows easier through a fat pipe than through a skinny one). Specific resistance is a constant for the type of conductor material being calculated.

Answer 3

For dc circuits, resistance (R) of a circuit ingredient is got here upon by measuring the voltage around the ingredient and the present that flows via the ingredient. In formulation words: R = V/I particular resistance (p) will enable one to ascertain the quantity of resistance (R) of a cord, given a particular diameter, length and fabric. In formulation words: p = RA/L {p = greek small letter "rho", R (as above), A = bypass-sectional element of cord, L = length of cord} particular resistance (p) has SI gadgets of (R x A): ohms-m² = ?-m² divided by L in meters it relatively is: ?-m²/m = ?-m {ie: ohm x meter} occasion: copper at 20°C has a particular resistance (p) = a million.678e-8 ?-m (from this particular resistance (p) that's available to compute the resistance (R) for a given length and diameter of copper cord}

Answer 4

specific resistance is the resistance of a special resistor in the unit of volume or lengh