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

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Series & Parallel Circuits
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Series circuit definition

All components connected in a single loop

Effect of component failure in series circuit

Entire circuit breaks, no components work

Current at different points in series circuit

Same at every point

Potential difference distribution in series circuit

Shared among all components

Voltage formula for series circuit

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

Parallel circuit definition

Multiple paths for charge, each component in own branch

Effect of component failure in parallel circuit

Other branches continue to work

Current distribution in parallel circuit

Total current divided among branches

Current formula for parallel circuit

Itotal=I1+I2+I3+...I_{total} = I_1 + I_2 + I_3 + ...

Potential difference across parallel branches

Same as across power source

Voltage formula for parallel circuit

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

Unit for measuring current

Amperes (A)

Instrument for measuring current

Ammeter

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