Students undoubtedly find electromagnetism tricky, especially at GCSE.
I have found it helpful to start with the F = BIl formula.
This means that we can use the streamlined F-B-I mnemonic — developed by no less a personage than Robert J. Van De Graaff (1901-1967) of Van De Graaff generator fame — instead of the cumbersome “First finger = Field, seCond finger = Current, thuMb = Motion” convention.
Students find the beginning steps of applying Fleming’s Left Hand Rule (FLHR) quite hard to apply, so I print out little 3D “signposts” to help them. You can download file by clicking the link below.
You can see how they are used in the photo below.
Important tip: it can…
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