Electrical charge and current (AQA GCSE Physics): Flashcards

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Electrical charge and current
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Electric current definition

Rate of flow of charge

Cause of current in metals

Electrons moving

Charge, current, time formula

Q=I×tQ = I \times t

Unit for charge (Q)

Coulombs (C)

Unit for current (I)

Amperes or amps (A)

Unit for time (t)

Seconds (s)

Formula for current (I)

I=QtI = \frac{Q}{t}

Formula for time (t)

t=QIt = \frac{Q}{I}

Instrument to measure current

Ammeter

Ammeter connection method

In series

Current in series circuits

Same at all points

Minutes to seconds conversion

Multiply by 60

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