Current and Potential Difference

Question 1

what is current?

Answer 1

Current is the flow of electrical charge around the circuit. It will only flow through a component if there is a potential difference across that component

Question 2

what is potential difference?

Answer 2

Potential difference is the driving force that pushes the current round

Question 3

what is resistance?

Answer 3

Resistance is anything in the circuit which slows the flow down

Question 4

what is the rule of resistance?

Answer 4

The greater the resistance across a component, the smaller the current that flows

Question 5

what is current measured in?

Answer 5

Current is measured in amperes (I)

Question 6

what is charge measured in?

Answer 6

Charge is measured in coulombs (c)

Question 7

what is time measured in?

Answer 7

Time is measured in seconds (s)

Question 8

what is potential difference?

Answer 8

Potential difference is the work done per coulomb that passes between two points in an electrical circuit