Series & Parallel Circuits (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes

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Series & Parallel Circuits
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What defines a series circuit?

All components in a single loop

What happens if one component fails in a series circuit?

The entire circuit is broken

How does current vary at different points in a series circuit?

Current is the same at every point

A cell provides 44 V in a series circuit with two identical lamps. What is the p.d. across each lamp?

22 V

Which formula represents total potential difference in a series circuit?

Vtotal=V1+V2+V3+...V_{total} = V_1 + V_2 + V_3 + ...

What instrument measures current and how is it connected?

Ammeter, connected in series

What defines a parallel circuit?

Multiple paths for charge to flow

What happens if one component fails in a parallel circuit?

Components in other branches work

How is total current related to branch currents in a parallel circuit?

Total current equals sum of branches

Total current is 66 A in a parallel circuit with three identical branches. What is current in each?

22 A

How does p.d. across each branch compare to the power source in a parallel circuit?

Same as the power source

A battery provides 44 V in a parallel circuit. What is the p.d. across each branch?

44 V

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