Table of Contents
- 1 What is the resistance of metal?
- 2 How do you calculate the resistance of a metal wire?
- 3 Which wire has the most resistance?
- 4 What is the resistance of the wire class 10?
- 5 How do you calculate the resistance of a wire?
- 6 What is the equation for the resistance of a wire?
- 7 What is the electrical resistance of stainless steel?
What is the resistance of metal?
The resistance of a metal is given by R=V/I, where V is potential difference and I is the current. In a circuit, the potential difference across resistance is V=(8±0.
How do you calculate the resistance of a metal wire?
To calculate the resistance R of a wire, we need to know three things:
- its length – the longer the wire, the greater its resistance.
- its cross-sectional area A – the greater the area, the less its resistance.
- the resistivity of the material r – the greater the resistivity, the greater its resistance.
How do you find the resistance of a wire?
Once you have plugged in the numbers, simply take voltage divided by current to solve for the resistance of the wire. For example: R = V/I = 100/10 = 10 ohms. The resistance of the wire is 10 ohms.
Which wire has the most resistance?
Nichrome
Nichrome, a non-magnetic 80/20 alloy of nickel and chromium, is the most common resistance wire for heating purposes because it has a high resistivity and resistance to oxidation at high temperatures. When used as a heating element, it is usually wound into coils.
What is the resistance of the wire class 10?
The resistance of a connecting wire is defined as the ratio of potential difference across its ends to the electric current flowing through it.
What is the resistance of aluminum wire?
Resistivity and Temperature Coefficient at 20 C
| Material | Resistivity ρ (ohm m) | Conductivity σ x 107 /Ωm |
|---|---|---|
| Silver | 1.59 | 6.29 |
| Copper | 1.68 | 5.95 |
| Copper, annealed | 1.72 | 5.81 |
| Aluminum | 2.65 | 3.77 |
How do you calculate the resistance of a wire?
The resistance of a wire is given by the equation: R = ρ x l/A. Where R is resistance, ρ (pronounced ‘rho’) is the resistivity of the wire, l is length and A is its cross-sectional area.
What is the equation for the resistance of a wire?
The following equation is used to calculate the resistance of a wire. R = ρ * L / A Where R is the resistance in Ohms ρ is the resistivity of the material the wire is made of.
What is high resistance wire?
Resistance wire is a high-resistance electrical wire that is often found in industrial applications including electrical ovens, toasters, and heating elements. The two major types of resistance wire are Kanthal and Nichrome wire. Kanthal is a ferritic iron-chromium-aluminum alloy that can be in high temperature applications.
What is the electrical resistance of stainless steel?
Electrical resistivity is measured in ohms/meter, as the reciprocal of conductivity. 304 stainless steel has an electrical resistivity of 7.2×10^-5 ohms/centimetre, or 7.2×10^-3 ohms/meter, according to Lenntech Water Treatment Solutions.