Electrical charge and current: Electricity

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Physics

11th

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13 Terms

1
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Charge
A property of something which experiences a force when placed in an electric field
A property of something which experiences a force when placed in an electric field
2
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Electrons
Negatively charged particles that transfer energy through wires
Negatively charged particles that transfer energy through wires
3
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Current
The rate of flow of electric charge (electrons) around a circuit
The rate of flow of electric charge (electrons) around a circuit
4
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Ammeter
A device used to measure current through a component (must be placed in series with that component)
A device used to measure current through a component (must be placed in series with that component)
5
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Direct current (dc)
An electric current which flows consistently in one direction around a circuit
An electric current which flows consistently in one direction around a circuit
6
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Alternating current (ac)
An electric current that continually reverses direction and changes size
An electric current that continually reverses direction and changes size
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Q = It
The equation linking charge flow, current and time
The equation linking charge flow, current and time
8
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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
11
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Amps/amperes (A)
The SI unit for current
The SI unit for current
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Coulombs (C)
The SI unit for charge flow
The SI unit for charge flow
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Seconds (s)
The SI unit for time
The SI unit for time