Question

Which type wire should be used to increase resistance

Answer 1

Nichrome wire. That's the stuff that toasters are made from. The resistance is pretty high, considering the diameter. 1 meter is at about the same guage as that listed below for copper is about 96 ohms.

Most of the time you are trying to use wire with the least resistance.

A meter of copper has a listed resistance of 0.024 ohms / meter. The wire is a 19 guage wire which makes it pretty thin.

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I'm not sure what you are asking. If want the resistance of something in terms of what would increase the resistance of the same material for both calculations then

Rule 1: It you decrease the wire diameter, you increase the resistance

Rule 2: If you increase the length of the wire, you increase the resistance.

Both rules assume you are using something like copper.

Answer 2

Answer:

A wire having longer length and small cross sectional area will have more resistance

Explanation:

The length of wire affects the resistance of the wire. Taking a longer wire will have more resistance in it due to the longer path the electrons have to flow along to get from one end to the other. Similarly the larger the cross sectional area, the lower the resistance and vice versa because the electrons have a larger area to flow through.