A1 LT4

Question 1

What is needed to move an electron from the positive terminal to the negative terminal of a source?

Answer 1

Energy

Question 2

What is power?

Answer 2

Rate of doing work or energy transfer

Question 3

What is the name of the quantity of charge on 6.24 x 10^18 electrons?

Answer 3

Coulomb

Question 4

What happens to an electron when it is moved against a force from the positive to the negative terminal?

Answer 4

It is given energy

Question 5

What does W stand for in electrical units?

Answer 5

Watt

Question 6

What does the term ‘current’ refer to?

Answer 6

Rate of flow of charge

Question 7

What does potential difference refer to?

Answer 7

Energy level difference

Question 8

What is the definition of 1 watt?

Answer 8

1 joule per second

Question 9

How is 1 volt defined in terms of joules and coulombs?

Answer 9

1 V = 1 J/C

Question 10

What is the equation for power in watts?

Answer 10

1W = 1V x 1A

Question 11

How many electrons is 1 ampere equal to per second?

Answer 11

6.24 x 10^18

Question 12

What forces act on an electron when moving from the positive to the negative terminal?

Answer 12

Attraction to positive, repulsion from negative

Question 13

What electrical unit is represented by the symbol R?

Answer 13

Resistance

Question 14

What is the unit of potential difference?

Answer 14

Volt

Question 15

What is the unit for electromotive force (emf) or potential difference (PD)?

Answer 15

Volt

Question 16

What does it mean if 3 joules of energy are used to move 1 coulomb of charge?

Answer 16

The potential difference is 3 volts.