An investigation into how the strength of an electromagnet is affected by varying the current

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An investigation into how the strength of an electromagnet is affected by varying the current

Introduction

I am investigating whether, and if so, how an electromagnet is affected by varying the current. An electromagnet is a magnet created by winding a wire around a soft iron c-core and running a current through the wire. Current is measured in Amperes (A).

Variables available

Voltage

Current

·N0 of coils around the c-core

Size of the c-cores (thickness/length)

Type/size of the wire coiled around the c-core

I chose to use current as my variable. I decided this because I have access to accurate equipment to measure the current, when I change it. The other available variables will be kept constant throughout the experiments.

Aim

I aim to find how varying the current in an electrical circuit affects the strength of an electromagnet.

Background Scientific Knowledge

My c-cores that I will be using will be ferromagnetic, meaning that it quickly becomes demagnetised when the current is switched off and that it is very good at increasing the strength of