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V rms and I rms shorten
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Jul 1, 2025
V rms and I rms shorten
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0:07
Welcome to Maths and Science Academy. In
0:09
this video, we will be looking at part
0:11
four of electronamics.
0:25
In the alternating current AC generator,
0:28
the coil is connected to slip rings. The
0:30
current in the slip rings changes
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direction when the current in the coil
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reverses. Thus, alternating current AC.
0:36
The brushes collect the alternating
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current AC from slip rings. The circuit
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symbol for alternating current is this
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one. Root mean skewer current is zero.
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Root mean skewer potential difference is
0:48
also zero.
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coil is rotated in a clockwise
1:01
direction.
1:03
The coil cut through the magnetic field
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which is directed from north to south
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pole of the magnet. V and I increase to
1:10
voltage V max and current. Immax when
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the coil is horizontal and it cuts the
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magnetic field perpendicularly.
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Root mean skewer current is at maximum
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mean skewer potential difference is at
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maximum.
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Maximum potential difference. Maximum
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current and maximum power are related to
1:28
each other by the following equation.
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Average power dissipated in any
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component can be calculated in terms of
1:34
the arms values. The relationship V RMS=
1:39
2 IRMS * R is a useful equation when
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working with electric circuits. The
1:44
alternating current is C cycle. Consider
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simplified diagram below represents an
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electric motor. Give a reason why the
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section of the coil labeled BC in the
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above diagram does not experience a
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magnetic force whilst the coil is in the
1:58
position as shown. We can see from the
2:00
diagram there is an open switch. This
2:02
implies no current. Consider the graphs
2:05
of the current and potential difference
2:07
outputs of an AC generator. Calculate
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the average power output of this
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generator.
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Thanks for watching.
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