Electricity year 11

Question 1

Symbol and units for current

Answer 1

I and Amps

Question 2

Symbol and units for Voltage

Answer 2

V and Volts

Question 3

Symbol and units for Charge

Answer 3

Q and Coulombs

Question 4

Symbol and units for Resistance

Answer 4

R and Ohms

Question 5

Symbol and units for Power

Answer 5

P and Watts

Question 6

Symbol and units for Energy

Answer 6

E and Joules

Question 7

Symbol and units for Time

Answer 7

t and seconds

Question 8

As power supply increases, the current ___

Answer 8

Increases

Question 9

In the series current is ______ everywhere

Answer 9

The same

Question 10

As more lamps added (in series), current become ____

Answer 10

Less

Question 11

As more lamps added in parallel circuit, current from the power supply ___

Answer 11

Increases

Question 12

When picking the fuse for a device you should choose always the ____ , it _____ melt

Answer 12

Smallest , will not

Question 13

Current =

Answer 13

Flow of electric charge

Question 14

The bigger resistance, the ___ current

Answer 14

Smaller

Question 15

Resistance =

Answer 15

The opposition to flow of charge

Question 16

Exam question:
How does the resistance of a piece of wire vary with with its length?

Answer 16

Short wire:
- low resistance, less particles to collide with

Long wire:
- increased resistance , more particles to collide with and further to travel

Question 17

In the series circuit current is ____ ________

Answer 17

The same everywhere

Question 18

If in series circuit something will go wrong ______ will break

Answer 18

Everything

Question 19

In the parallel circuit sum of the current is ____

Answer 19

Equal

Question 20

If in series circuit more lamps added current become ___ and lamp get _____

Answer 20

Less dimmer

Question 21

If in parallel series more lamps added current _____

Answer 21

Increases

Question 22

Series, advantages

Answer 22

• cheap
• easy to build

Question 23

Series, disadvantages

Answer 23

• one bulb breaks = they all break

Question 24

Parallel, advantages

Answer 24

• have things on independent loops, so components operate differently

Question 25

Parallel disadvantages

Answer 25

- more dangerous, as if one bulb breaks, others stay on

Question 26

Series, Voltage Total voltage is _______ amongst components.

Answer 26

Shared

Question 27

Parallel, voltage

Answer 27

Every single component gets the maximum voltage