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Topic 10 - electricty + circuits
Electricty + circuits
Electrical charge + current
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Fiki akinsanya
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Cards (13)
Charge
A property of something which experiences a force when placed in an
electric
field
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Electrons
Negatively
charged particles that transfer energy through wires
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Current
The rate of flow of
electric charge
(
electrons
) around a circuit
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Ammeter
A device used to measure current through a
component
(must be placed in series with that component)
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Direct current
(
dc
)
An electric current which flows consistently in one
direction
around a circuit
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Alternating current
(ac)
An
electric current
that continually reverses direction and changes size
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Q
=
It
The equation linking
charge flow
,
current
and time
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Q
The symbol for
charge flow
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I
The symbol for current
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t
The symbol for time
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Amps
/
amperes
(A)
The
SI
unit for current
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Coulombs
(C)
The
SI
unit for charge flow
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Seconds
(s)
The
SI unit
for time
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