Electricity

Question 1

electric 1.____ is the flow of electrical 2._______

Answer 1

1.current 2.charge

Question 2

The greater the rate of flow the 1._______ the current

Answer 2

higher

Question 3

What is current measured in?

Answer 3

Amperes (A)

Question 4

What is amperes often abbreviated to?

Answer 4

Amps

Question 5

What is electrical charge often measured as?

Answer 5

Coulombs (C)

Question 6

What equation is used to calculate coulombs?

Answer 6

Charge flow = current x time

Question 7

What is the equation to calculate coulombs using only letters?

Answer 7

Q=It

Question 8

What is the resistance of a component measuring?

Answer 8

the resistance of a component

Question 9

what happens when the resistance is high

Answer 9

It is more difficult for the charge to flow

the current is lower

Question 10

What does the potential difference tell us?

Answer 10

the difference in electrical potential from one point in the circuit to another

Question 11

What is another name for the potential difference?

Answer 11

voltage

Question 12

What happens when the potential difference is large across a component?

Answer 12

The greater the flow of charge is throughout the component

and the current is bigger

Question 13

What is the equation to work out the potential difference?

Answer 13

Potential difference = Current x Resistance

Question 14

What is the equation of potential difference using letters only?

Answer 14

V=IR

Question 15

What is the potential difference graph used to do?

Answer 15

the relationship between the potential difference and the current for any component

Question 16

in a potential difference graph what is the origin?

Answer 16

The origin is where the axis intersect and is pretty much always plotted as (0,0)

Question 17

In a potential difference graph what does it mean if there is a straight line through the origin?

Answer 17

The voltage and the current are directly proportional

Question 18

In a potential difference graph what does a steep gradient mean?

Answer 18

low resistance ,as a large current,will flow for a small potential difference

Question 19

In a potential difference graph what does it mean if the gradient is shallow?

Answer 19

A high resistance,as a large potential difference is needed to produce a small current