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Ohm's Law and the Resistivity of a Wire
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Electrical Power, Energy and the Cost of Electricity
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Series and Parallel Circuits
Scenarios
Example 8: two in series
Example 7: three in series
Example 9: two in parallel
A, then B and C in parallel
Custom
Connection
Series
Parallel
Both
Bulbs
2
3
Battery emf
Bulb A
Bulb B
Bulb C
Replace any blown bulbs
Circuit element
Resistance
Voltage
Current
Power
P
=
VI
(brightness)
Battery
Tap the switch to open or close it. Tap a bulb to burn it out (tap again to replace it). The moving dots show the current: the faster they go, the bigger the current.