Table of Contents
Which has higher resistance copper or manganin?
Resistivity of Copper wire is less than that of the resistivity of magnanin wire. Therefore, the area of cross- section of copper wire is less than that of magnanin. Hence, Manganin wire is thicker.
Will two copper wires of different length have same resistance?
Resistance of a wire is directly proportional to the length (l) of the wire and inversely proportional to the area of cross-section of the wire. So, the thicker wire will have more specific resistance as resistivity is directly proportional to area of cross-section.
Which is better conductor copper or manganin?
HEY!! ▶Copper should be used in the transmission lines because copper is a really good conductor and does not heat the surface like manganin. ▶Whereas manganin is used in heating devises because the heat is trapped and results in the heating effect of electricity.
Is aluminum wire better than copper?
Copper wiring is more stable than aluminum and smaller conductors are needed to transmit power loads. Overall all it is more durable and performs better than aluminum wiring. Aluminum is much lighter and malleable than copper and therefore, makes it easier to work with.
What happens when you mix aluminum and copper?
Copper and aluminum can be combined to form a copper-aluminum alloy. However, under very high temperature, copper and aluminum can form a solid solution. When this solution cools, the intermetallic compound CuAl2, or copper aluminide, can form as a precipitate.
Which will have more resistivity?
Resistivity and Temperature Coefficient at 20 C
| Material | Resistivity ρ (ohm m) | Ref |
|---|---|---|
| Copper, annealed | 1.72 | 2 |
| Aluminum | 2.65 | 1 |
| Tungsten | 5.6 | 1 |
| Iron | 9.71 | 1 |
When a wire of resistance R is pulled through in order to double its length the new resistance of the wire will be?
As the length of wire gets doubled, the cross-sectional area will become half of its previous value because volume of wire remains constant. Hence, we can see that the new resistance is four times the previous resistance.
Is manganin a good conductor of electricity?
Manganin wire is also used as an electrical conductor in cryogenic systems, minimizing heat transfer between points which need electrical connections.
Which wire is thinner copper or Manganin?
Two wires of equal length, one of copper and other of manganin have the same resistance which wire is thinner and why? Assuming that both wires are of the same length. We know that R= (rho)*l/a where rho is the resistivity of the material, l is the length and a is the area of cross section. So we can find an equation for a from there.
Are there two wires of the same length?
There are two wires of equal length, one with copper and the other of Manganin. They have the same resistance. Which wire is thicker? Two wires each made up of copper and nichrome have equal lengths and equal resistance. Which is thicker?
What is the ratio of Manganin to copper resistance?
The ratio of resistivities is close to 1.7 x 10^-8 / 48 x 10^-8 for copper to manganin ie almost 1:28. Clearly, we need a lot more cross sectional area for the manganin for it to compete with copper. SQRT (28) is around 5.3. So, the manganin needs to be 5.3 times the diameter of the copper to have the same resistance.
What is the resistivity of Manganin?
I guess manganin is a copper alloy. Since its 86\% copper it will probably be only marginally thicker. Manganin is an alloy well known for its use in precision resistors often used as lab standards. The ratio of resistivities is close to 1.7 x 10^-8 / 48 x 10^-8 for copper to manganin ie almost 1:28.