Strengths of Electromagnets
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So, as the number of coils is increased on the unmagnetized iron nail, much wider and stronger magnetic field is generated. This is because the particles inside the iron nail become magnetized Methods
· Connect the circuit up
· Before any power is turned on, make sure the circuit is safe to use and is connected correctly
· Turn the power on. Adjust the amperes so that the amps reading are correct.
· Record the results
· Repeat the experiment necessarily, varying the factors as needed
Fair Test
· Make sure that use the same amount of iron filings
· Ammeter rading is correct as possible
· Try to make exact number of Coil numbers (e.g. no bent wires etc)
· Same amoun ...
