Ohm's law
Double the push, double the flow?
IB Diploma Programme
Lessons follow your syllabus order. Open any one directly before a test; none is locked, and each takes about four minutes.
IB Physics guide — Theme B: The particulate nature of matter · references are drafts awaiting teacher review
B.5 · SL/HLCurrent, potential difference and resistance
B.5 Resistivity
Not in the demo yet
B.5 · SL/HLSeries and parallel circuits
Bulbs in series
Add a second bulb on the same loop. Does the first one care?
Bulbs in parallel
Add a bulb, and the resistance goes down?
B.5 · SL/HLElectrical power
Which bulb is brighter?
The same two bulbs swap places when you rewire them.
B.5 · SL/HLEmf and internal resistance
Emf and internal resistance
Why the lights dim when another one switches on.
B.5 Potential dividers
Not in the demo yet
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