Albert Teen

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Flow of Charge

# Flow of Charge

### Flow of Charge

The electric current (I) is the amount of charge (Q) passing past a point in a certain amount of time (t). I = Q ÷ t

True or false? A charged particle is unable to move.

True or false? Electric current is the flow of electrons.

Particles with a similar charge are repelled away from each other, whilst particles with opposite charges are attracted to each other. The electric current is the rate of flow of this charge (electrons) past a fixed point.

1

Have a look at this image.

It shows the flow of charge past a fixed point A.

2

What letter is used to represent the charge?

Which of the following is electric current measured in?

If we are trying to work out the rate of flow of charge, what other information do we need apart from the charge?

The electric current is the amount of charge passing past a point in a certain amount of time. If a charge of 1350 coulombs passes through in 30 seconds, what is the charge per second?

If $Q$ is the amount of charge in coulombs, $I$ is the current in amps, and $t$ is the time in seconds, then which one is the correct formula for calculating current?

Which of the following is the unit for amount of charge?

The amount of charge that passes a point in the circuit is measured in coulombs (C). We measure the current in amps (A). Time is measured in seconds (s).

What is the charge, if a current of 5 amps flows through a circuit for 20 seconds?

What is the charge if a current of 2 amps flows through a circuit for 2 minutes?