# Physics

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What are the two main things a circuit needs to function? (not a battery)
must be a complete circuit, there must be no short circuits.
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What is an electric current?
a flow of electric charge.
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How do you calculate current?
I = Q ÷ T, I is the current in amps, Q is the chagre in coulombs, T is the time in seconds.
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What is potential difference messured in?
measured in Volts.
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How do you calculate potential difference
V = W ÷ Q, V is potential difference, W is the work done in joules, Q is the charge in Coulombs,
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What is thecdifference between a battery and a cell?
A battery is a collection of cells.
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What does an Ammeter look like?
Ammeter;
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What does a lamp look like?
Lamp;
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What does resistance mean?
A measure of how much a component resists the flow of elecricity.
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What is a filament lamp?
Filament lamps contain a thin metal filament that glows when electricity passes through it.
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## Other cards in this set

### Card 2

#### Front

What is an electric current?

#### Back

a flow of electric charge.

### Card 3

#### Front

How do you calculate current?

### Card 4

#### Front

What is potential difference messured in?

### Card 5

#### Front

How do you calculate potential difference

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