|In this project you
may use the electromagnet you made in previous experiments.
1: Strength of electromagnet,
Effect of coil loops
Introduction: Measuring the
strength of an electromagnet help us determine if an electromagnet is
strong enough for our specific need. It can also help us to identify
factors affecting the strength of an electromagnet. By knowing such
factors we can estimate the strength of an electromagnet before making
it. This is especially important for large electromagnets that cost
thousands of dollars.
- Make an electromagnet as you
did in the previous experiment. use 500 turns of magnet wire
on the coil. (You may want to use the same electromagnet you
used in the previous experiments.
- Attach a small plastic cup or
any similar object to a nail using threads. Make holes on the
cup and use tape if needed. This will be the initial weight
and a platform for additional weight.
- Hold the electromagnet you
made in the previous experiment so that the cap of the screw
will face down.
- Push the off/on button so that
the weight platform can hang to the electromagnet using the
- Start adding some weights to
the platform. Continue that until the weight platform falls.
- Record the total weight of the
weight platform before adding the last weight.
- Unwind 100 turns of the coil
wire and try the weight test again.
Than 10 Projects in One Kit
The advanced and standard
electromagnetism kits provide you with the opportunity of doing
more than 10 different experiments and projects related to
magnetism and electromagnetism. If you do not have the kit, please
order it now.