Voltage
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Compare these energy changes
Voltage is similar to height
Large energy
change here
Gaining
gravitational
potential
energy
Electrons gain
electrical
potential energy
from battery
Small energy
change here
Large
energy
change
Small energy
change in wires
Change of height indicates the energy changes of the children
Potential difference (voltage) measures the energy changes of the electrons
1 volt means 1 joule of energy per coulomb of charge
B
V2
V1
C
F
The total voltage across the
circuit components equals
the battery voltage
D
V3
Potential difference(V)
A
6
A
V
B
V2=2V
4
C
D
V1=6V
2
V3=4V
Voltmeter
in parallel
Ammeter
in series
A
E
0
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F
E
E2F8031D/6000/1208