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Flashcards in M3.3 Deck (19):
1

How is a potential difference caused?

Between two differently charged points

2

How is a electrical voltage caused?

When there is a lack of electrons at one point and a excessive amount at another

3

What is the formula for current(I)?

Charge(Q) / Time(T)

4

What is 1 coulomb equal to?

1 ampere-second

5

What way does conventional flow go?

Positive to negative

6

What way does electron flow go?

Negative to positive

7

What is a current that periodically changes flow known as?

AC current

8

Is chemically pure water conductive?

No

9

When current is passed through water what happens at the negative end?

All the hydrogen gathers up

10

When current is passed through water what happens at the positive end?

All the oxygen gathers up

11

What type of gases are used to stopped filament bulbs from burning?

Nitrogen, argon, krypton

12

What do oscillographs or oscilloscopes provide?

A visualisation of rapidly varying processes in electrical engineering

13

What is the difference between a oscillograph and a oscilloscope?

A oscillograph can permanently record the information but a oscilloscope can only view

14

What is the electron beam tube also known as?

The Braun tube

15

On a sin graph what does a straight line and waved line indicate?

The straight line is DC and a waved line is AC

16

What is voltage

The difference between two electrically charged points

17

What is voltage also known as?

Electromotive force (EMF)

18

If the voltage increases what happens to the current?

It increases

19

What is the formula for voltage?

Voltage(V) = current(I) x resistance(R)