Mell Why the large diameter wire will have less electrical resistance than the small diameter wire?
A short wire has a lower resistance than a long one*. Resistance is directly proportional to the length of the path through which current flows: R ∝ L. This means the longer the wire, the more resistance.
Which type of wire would have the least resistance?
12-gauge wire
A 12-gauge wire is wider than 14-gauge wire and thus has less resistance. The lesser resistance of 12-gauge wire means that it can allow charge to flow through it at a greater rate – that is, allow a larger current.
Does the diameter of a wire affect resistance?
Resistance is inversely proportional to the square of the diameter of a wire. If diameter is doubled then resistance is reduced by 4 times.
Which wire has less resistance a hot wire or a cold wire?
Current must travel farther through a longer wire, so there are more chances for it to collide with particles of matter. A cooler wire has less resistance than a warmer wire. Cooler particles have less kinetic energy, so they move more slowly. Therefore, they are less likely to collide with moving electrons in current.
Does a hot wire have more resistance?
Heating a metal conductor makes it more difficult for electricity to flow through it. Heating the metal conductor causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance.
What happens to resistance if diameter is doubled?
A) Decreases two times. Hint: Resistance of the conductor is directly proportional to the resistivity and length of the conductor, and inversely proportional to the area of the conductor. …
Why does a short wire have lower resistance than a long wire?
A short wire has a lower resistance than a long one*. Resistance is directly proportional to the length of the path through which current flows: R L. This means the longer the wire, the more resistance. 2. Cross-sectional Area. A thick wire (with a large cross-sectional area) has a lower resistance than a thin one*
How to describe the resistance of a wire?
The resistance of a length of wire is described by R = ρ l a where ρ = resitivity of copper; 10.371 Ω /cir. mil-ft l = length of the wire a = cross sectional area of the wire in cir.
Which is the Best Conductor of electrical resistance?
Silver is actually the best, but gold is chosen for a lot of microelectronic applications because of its resistance to oxidation. What is the electrical resistance of a 12-gauge copper wire, 500 feet long, at room temperature? A spool holds an unknown length of aluminum wire. The size of the wire is 4 AWG.
What is the resistance of an AWG wire?
A quick reference guide to cable resistance for the American Wire Gage. [ AWG Table] The first Table shows wire gauge vs resistance per 1000 feet. A fast and easy way to see the wire resistance changing as the wire gage changes. Standard wire sizes used in a number of Interface Buses [for data lines] are #22AWG, #24AWG, #26AWG, and 30AWG.