Electric circuits
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16 Terms
cell and battery
provides energy for charge to move
switch
closes or opens a circuit
conductor
connects circuit elements
bulb
glows when current flows through it
resistor
resists the flow of charge
voltmeter
measures potential difference
Ammeter
measures the current in circuit
electric current
the rate at which charge flows
potential difference
energy transferred per unit charge
resistance
the opposition of a conductor to the flow of current
Ohms law
states that current in a conductor is directly proportional to the potential difference across it provided its temperature remains constant
1 coulomb
amount of charge passing through a point in 1 second when current is 1 amp
EMF
electromotive force
EMF
the voltage measured across the terminals of a battery when no current is flowing through the battery
operating voltage
is the voltage measured across the terminals of a battery when current is flowing through the battery
cell
single energy source