P4.2 Electricity (Charge Flow)

How must the wires always be in your circuit diagram?

• drawn with a pencil
• straight lines
• parallel
• drawn with thick lines

For a circuit to work the circuit must be…

• closed
• open
• on
• charged up

Electric current is a flow of…

• volts
• water
• electrical charge
• resistance

Current is measured in…

• volts, V
• coulombs, C
• ohms, Ω
• amperes, A

Charge is measured in…

• volts, V
• coulombs, C
• ohms, Ω
• amperes, A

Electrical charge will only flow (around a completed circuit) if there is a…

• potential difference
• lightning
• time
• fuse

In a single, closed loop (circuit) the current…

• is different on each branch
• is the same everywhere
• varies around the circuit
• steps up and down

The size of the current tells you WHAT about the charge flowing?

• how fast

• the size

• 110 V

• hamster

Charge flow, current and time equation is…

• charge flow = current ÷ time
• charge flow = time ÷ current
• charge flow = current x time
• charge flow = time + current

Calculate the charge flow (pssst… you will need a calculator! Pssst... You have extra time to find it!) Current = 2 A, Time = 300 s

• 500 C
• 600 C
• 700 C
• 1,000 C