Physics investigation- Strength of Electromagnet

... Physic investigation- Strength of Electromagnet Aim The aim of the investigation is to find the strength of an electromagnet and how this is affected by an increase in current (I). We already know that other factors that increase the strength are the amount of coils and the inclusion of an iron core. Factors We will control the current using a variable resistor and measure it using an ammeter; we will keep the voltage the same. Keep the distance of the electromagnet from the scales the same. Make sure the magnet that is upon the scales is always in the same position. Also keep the distance of the last coil from the end of the iron core constant. We will have to keep the amount of coils around the iron core the same throughout the experiment and not add or take away an iron core. Hypothesis As the current increases the strength of the magnet

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