Energy and Voltage in Circuits
1 mark · NormalWhich statement correctly describes what happens to the current in a series circuit when the resistance is increased?
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Correct option: The current decreases.
Common mistakes: Choosing 'increases', confusing with parallel circuit
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Marking points
A1 · 1 mark · Correct option selected.
Worked solution
Increasing resistance in a series circuit reduces the current flowing, as given by V = I × R. If R increases, for constant V, I must decrease.