RHR #2 is used for coils and conventional current. You wrap your hand around the coil with your fingers pointing in the direction of the current and your thumb should then point to the direction of the magnetic field B, or N (north).

ooo00o0o0o another haiku;
due to Earth's magnetism.
Humans feel nothing.
Humans feel nothing.
i love your haiku.
ReplyDeleteit makes my day and blogging
enjoyable, thanks!
thank you Sharon <3333
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