which factors determine the direction of electric current
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Answered by
1
The easy way would be
to measure the voltage drop across an element. If you put the positive
probe of the voltmeter/multi-meter on one terminal of the element, and
the negative probe on the other terminal, if the voltage reading is
positive, *conventional current is flowing from the direction of your positive probe towards the negative probe.If
you have a high enough current that produces a magnetic field strong
enough to deflect the needle of a compass noticeably, another way would
be to use a compass and probe the wire (move the needle to different
positions around the wire) in circular paths and observe the direction
of the needle. The conventional current is defined to produce a
magnetic field that has an orientation determined by the right hand
rule. I’m not entirely sure what you’d need to see the needle do to
determine which way the current is flowing, but I’ll link a video below,
which shows the motivation for the idea, at least.Conventional current: positive charges
moving from the high voltage side towards the low voltage (ground) side,
which has the same effect as electrons flowing from the ground side to
the high voltage side (which is what actually happens, because electrons
are what actually moves, not protons).
Answered by
54
Factors of electric current:
Resistance.
Thickness of the conductor.
Potential difference.
Drift velocity.
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