# Resistance of a wire coursework

• sueanne
In summary, for the resistance of a wire coursework, the individual has already completed their experiment using different lengths and resistance. However, for the evaluation portion, they need to write an extension and have a few ideas in mind. These include experimenting with other types of wire materials, including non-metallic conductors, to see if they follow the same pattern. They also want to explore the relationship between current, resistance, and voltage by setting up a potentiometer circuit. The individual is struggling to come up with a mini-method for one of these ideas and is seeking suggestions. One possible idea is to use different resistors (e.g. 3 ohms, 5 ohms) and examine the patterns and proportionalities using the formula
sueanne
For the resistance of a wire coursework, i have already done it based on experimenting with different lenghts against resistance. for the evaluation, i need to write an extension on the coursework: i have a few ideas already
• Experimenting with other types of materials of wires to see if they follow the same pattern.
• Find out if non-metallic conductors follow the same pattern as well.
• Find out if there is a relationship with current, resistance and voltage. The experiment can be set up like the potentiometer circuit.

the problem is that i need to come up with a mini-method for one of them, but I am right confused on that, any ideas? it would also be great if its for the first bullet pint

Thanks!

you could try to use different resistors ie. 3 ohms, 5 ohms etc. Well you don't need to look for patterns and proportionalities as you could do that by looking at this formula V=IR

Great job on completing your resistance of a wire coursework! It seems like you have some interesting ideas for extensions to your experiment. Let's take a closer look at each one and see if we can come up with a mini-method for one of them.

1. Experimenting with other types of materials of wires to see if they follow the same pattern.
For this extension, you could choose a few different materials of wires such as copper, aluminum, and steel and measure their resistance at different lengths. The mini-method could involve creating a table to record the different materials, their lengths, and corresponding resistances. Make sure to use the same equipment and set up for each material to ensure accurate results.

2. Find out if non-metallic conductors follow the same pattern as well.
To test this, you could use materials such as graphite, carbon, or even a pencil lead as your conductor. The mini-method could involve setting up a circuit with the non-metallic conductor and measuring the resistance at different lengths. Again, make sure to use the same equipment and set up for each material to ensure accurate results.

3. Find out if there is a relationship with current, resistance, and voltage. The experiment can be set up like the potentiometer circuit.
For this extension, you could set up a circuit with a variable resistor (potentiometer) and measure the current, resistance, and voltage at different settings. The mini-method could involve creating a graph to plot the relationship between these variables. You could also try different materials for the resistor and compare the results.

Overall, the key to coming up with a mini-method is to keep it simple and focused on one specific aspect of your extension idea. I hope these suggestions help, and good luck with your coursework!

## What is the purpose of conducting a resistance of a wire coursework?

The purpose of conducting a resistance of a wire coursework is to understand the relationship between the length, cross-sectional area, and type of material of a wire and its resistance. This coursework helps students to develop their practical and analytical skills in conducting experiments and analyzing data.

## What factors affect the resistance of a wire?

The resistance of a wire is affected by its length, cross-sectional area, and type of material. A longer wire will have higher resistance compared to a shorter wire. A thicker wire will have lower resistance compared to a thinner wire. Different materials have different resistivities, which can affect the overall resistance of a wire.

## What is the formula for calculating the resistance of a wire?

The formula for calculating the resistance of a wire is R = ρL/A, where R is the resistance in ohms (Ω), ρ is the resistivity of the material in ohm-meters (Ωm), L is the length of the wire in meters (m), and A is the cross-sectional area of the wire in square meters (m²).

## How can the resistance of a wire be measured?

The resistance of a wire can be measured using a multimeter or an ohmmeter. The wire is connected to the two terminals of the device, and the resistance value is displayed on the screen. It is important to ensure that the wire is not under any tension or strain while measuring its resistance.

## What are some possible sources of error in a resistance of a wire experiment?

Some possible sources of error in a resistance of a wire experiment include variations in the wire's diameter, temperature changes, and inaccuracies in measurement equipment. Additionally, the presence of impurities or imperfections in the wire can also affect its resistance. It is important to take multiple measurements and average them to minimize the impact of these errors.

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