# Does Wire Wraps Affect Magnet Strength?

Easy
Let's explore how the number of wire wraps around a steel bar affects the amount of iron filings an electromagnet can pick up.

## Hypothesis

The hypothesis is that the steel bar with 100 wraps will pick up more iron filings than the 75 and the 75 will pick up more iron filings than the steel bar with 50.

## Method & Materials

You will need to get metal, wire, and a transformer, wrap the wire tightly around the metal rod, attach the ends of the wire to the battery, stick the end of the metal rod into iron filings, bring the metal rod up slowly, put it above the grain scale, and find the mass of the iron filings.
You will need 3 metal bars, steel, 2 meters copper wire, 1 6-volt battery, 2 needle nose pliers, 1 small glass, 20 grams iron filings, and 1 grain scale.

## Results

The results indicate that the more wraps a rod has, the more iron filings it picked up. This suggests that the hypothesis should be accepted. It would be interesting to explore if this would still work the same way with heavier metals.

## Why do this project?

This science project is interesting because it explores how the number of wire wraps around a steel bar affects the amount of iron filings an electromagnet can pick up.

## Also Consider

Experiment variations to consider include using thicker wire and a stronger transformer, and lifting small metal objects heavier than the filings.

## Full project details

You can find additional information and details for this science fair project here. Have fun exploring!